# Subtracting the First Rational Number from the Second: Worksheets, Online Test and Calculators

Subtracting the first rational number from the second worksheets, solved worksheet problems or exercises with step-by-step work, formative assessment as online test, calculator and more learning resources to learn, practice, assess and master the basic math skills of fraction.

Subtracting the First Rational Number from the Second
Name
Date

1
-5/7 - -3/8 =

2
-7/8 - 5/9 =

3
-5/6 - -3/11 =

4
2 1/5 - -1/3 =

5
-7/24 - 17/36 =

6
-19/10 - 2/15 =

7
-13/-11 - 15/9 =

8
-4 3/4 - 2 7/12 =

9
-4 5/24 - 2 7/22 =

10
10/9 - -3/8 =

11
-2/6 - -7/8 =

12
4/8 - -5/7 =

13
-3/4 - 3/9 =

14
3/7 - -7/10 =

15
-5/6 - -4/5 =

16
-5/6 - 6/8 =

17
6/7 - -3/4 =

18
-3/10 - -8/9 =

19
3/6 - -7/10 =

20
1/9 - -13/8 =

Solved Worksheet Problems
Show All Workout
1
-5/7 - -3/8 =
-19/56
Steps
-57
-
-38
Find the lcm for both denominators
LCM(7, 8) = 56
Make all the denominators equal to each other
-57
=
-5 x 567 x 56
=
-5 x 856
=
-4056
-38
=
-3 x 568 x 56
=
-3 x 756
=
-2156
-4056
-
-2156
=
-40 - -2156
=
-1956
-57
-
-38
=
-1956
2
-7/8 - 5/9 =
-103/72
Steps
-78
-
59
Find the lcm for both denominators
LCM(8, 9) = 72
Make all the denominators equal to each other
-78
=
-7 x 728 x 72
=
-7 x 972
=
-6372
59
=
5 x 729 x 72
=
5 x 872
=
4072
-6372
-
4072
=
-63 - 4072
=
-10372
-78
-
59
=
-10372
3
-5/6 - -3/11 =
-37/66
Steps
-56
-
-311
Find the lcm for both denominators
LCM(6, 11) = 66
Make all the denominators equal to each other
-56
=
-5 x 666 x 66
=
-5 x 1166
=
-5566
-311
=
-3 x 6611 x 66
=
-3 x 666
=
-1866
-5566
-
-1866
=
-55 - -1866
=
-3766
-56
-
-311
=
-3766
4
2 1/5 - -1/3 =
38/15
Steps
Convert the mixed fraction into fraction
2
15
=
(2 x 5) + 15
=
10 + 15
=
115
115
-
-13
Find the lcm for both denominators
LCM(5, 3) = 15
Make all the denominators equal to each other
115
=
11 x 155 x 15
=
11 x 315
=
3315
-13
=
-1 x 153 x 15
=
-1 x 515
=
-515
3315
-
-515
=
33 - -515
=
3815
2
15
-
-13
=
3815
5
-7/24 - 17/36 =
-55/72
Steps
-724
-
1736
Find the lcm for both denominators
LCM(24, 36) = 72
Make all the denominators equal to each other
-724
=
-7 x 7224 x 72
=
-7 x 372
=
-2172
1736
=
17 x 7236 x 72
=
17 x 272
=
3472
-2172
-
3472
=
-21 - 3472
=
-5572
-724
-
1736
=
-5572
6
-19/10 - 2/15 =
-61/30
Steps
-1910
-
215
Find the lcm for both denominators
LCM(10, 15) = 30
Make all the denominators equal to each other
-1910
=
-19 x 3010 x 30
=
-19 x 330
=
-5730
215
=
2 x 3015 x 30
=
2 x 230
=
430
-5730
-
430
=
-57 - 430
=
-6130
-1910
-
215
=
-6130
7
-13/-11 - 15/9 =
-16/33
Steps
-13-11
-
159
Find the lcm for both denominators
LCM(-11, 9) = -99
Make all the denominators equal to each other
-13-11
=
-13 x -99-11 x -99
=
-13 x 9-99
=
-117-99
159
=
15 x -999 x -99
=
15 x -11-99
=
-165-99
-117-99
-
-165-99
=
-117 - -165-99
=
48-99
simplify the fraction
GCF(48, -99) = -3
48-99
=
48 ÷ -3-99 ÷ -3
=
-1633
-13-11
-
159
=
-1633
8
-4 3/4 - 2 7/12 =
-35/6
Steps
Convert the mixed fraction into fraction
-4
34
=
(-4 x 4) + 34
=
-16 + 34
=
-134
2
712
=
(2 x 12) + 712
=
24 + 712
=
3112
-134
-
3112
Find the lcm for both denominators
LCM(4, 12) = 12
Make all the denominators equal to each other
-134
=
-13 x 124 x 12
=
-13 x 312
=
-3912
3112
=
31 x 1212 x 12
=
31 x 112
=
3112
-3912
-
3112
=
-39 - 3112
=
-7012
simplify the fraction
GCF(70, 12) = 2
-7012
=
-70 ÷ 212 ÷ 2
=
-356
-4
34
-
2
712
=
-356
9
-4 5/24 - 2 7/22 =
-1613/264
Steps
Convert the mixed fraction into fraction
-4
524
=
(-4 x 24) + 524
=
-96 + 524
=
-9124
2
722
=
(2 x 22) + 722
=
44 + 722
=
5122
-9124
-
5122
Find the lcm for both denominators
LCM(24, 22) = 264
Make all the denominators equal to each other
-9124
=
-91 x 26424 x 264
=
-91 x 11264
=
-1001264
5122
=
51 x 26422 x 264
=
51 x 12264
=
612264
-1001264
-
612264
=
-1001 - 612264
=
-1613264
-4
524
-
2
722
=
-1613264
10
10/9 - -3/8 =
107/72
Steps
109
-
-38
Find the lcm for both denominators
LCM(9, 8) = 72
Make all the denominators equal to each other
109
=
10 x 729 x 72
=
10 x 872
=
8072
-38
=
-3 x 728 x 72
=
-3 x 972
=
-2772
8072
-
-2772
=
80 - -2772
=
10772
109
-
-38
=
10772
11
-2/6 - -7/8 =
13/24
Steps
-26
-
-78
Find the lcm for both denominators
LCM(6, 8) = 24
Make all the denominators equal to each other
-26
=
-2 x 246 x 24
=
-2 x 424
=
-824
-78
=
-7 x 248 x 24
=
-7 x 324
=
-2124
-824
-
-2124
=
-8 - -2124
=
1324
-26
-
-78
=
1324
12
4/8 - -5/7 =
17/14
Steps
48
-
-57
Find the lcm for both denominators
LCM(8, 7) = 56
Make all the denominators equal to each other
48
=
4 x 568 x 56
=
4 x 756
=
2856
-57
=
-5 x 567 x 56
=
-5 x 856
=
-4056
2856
-
-4056
=
28 - -4056
=
6856
simplify the fraction
GCF(68, 56) = 4
6856
=
68 ÷ 456 ÷ 4
=
1714
48
-
-57
=
1714
13
-3/4 - 3/9 =
-13/12
Steps
-34
-
39
Find the lcm for both denominators
LCM(4, 9) = 36
Make all the denominators equal to each other
-34
=
-3 x 364 x 36
=
-3 x 936
=
-2736
39
=
3 x 369 x 36
=
3 x 436
=
1236
-2736
-
1236
=
-27 - 1236
=
-3936
simplify the fraction
GCF(39, 36) = -3
-3936
=
-39 ÷ -336 ÷ -3
=
-1312
-34
-
39
=
-1312
14
3/7 - -7/10 =
79/70
Steps
37
-
-710
Find the lcm for both denominators
LCM(7, 10) = 70
Make all the denominators equal to each other
37
=
3 x 707 x 70
=
3 x 1070
=
3070
-710
=
-7 x 7010 x 70
=
-7 x 770
=
-4970
3070
-
-4970
=
30 - -4970
=
7970
37
-
-710
=
7970
15
-5/6 - -4/5 =
-1/30
Steps
-56
-
-45
Find the lcm for both denominators
LCM(6, 5) = 30
Make all the denominators equal to each other
-56
=
-5 x 306 x 30
=
-5 x 530
=
-2530
-45
=
-4 x 305 x 30
=
-4 x 630
=
-2430
-2530
-
-2430
=
-25 - -2430
=
-130
-56
-
-45
=
-130
16
-5/6 - 6/8 =
-19/12
Steps
-56
-
68
Find the lcm for both denominators
LCM(6, 8) = 24
Make all the denominators equal to each other
-56
=
-5 x 246 x 24
=
-5 x 424
=
-2024
68
=
6 x 248 x 24
=
6 x 324
=
1824
-2024
-
1824
=
-20 - 1824
=
-3824
simplify the fraction
GCF(38, 24) = 2
-3824
=
-38 ÷ 224 ÷ 2
=
-1912
-56
-
68
=
-1912
17
6/7 - -3/4 =
45/28
Steps
67
-
-34
Find the lcm for both denominators
LCM(7, 4) = 28
Make all the denominators equal to each other
67
=
6 x 287 x 28
=
6 x 428
=
2428
-34
=
-3 x 284 x 28
=
-3 x 728
=
-2128
2428
-
-2128
=
24 - -2128
=
4528
67
-
-34
=
4528
18
-3/10 - -8/9 =
53/90
Steps
-310
-
-89
Find the lcm for both denominators
LCM(10, 9) = 90
Make all the denominators equal to each other
-310
=
-3 x 9010 x 90
=
-3 x 990
=
-2790
-89
=
-8 x 909 x 90
=
-8 x 1090
=
-8090
-2790
-
-8090
=
-27 - -8090
=
5390
-310
-
-89
=
5390
19
3/6 - -7/10 =
6/5
Steps
36
-
-710
Find the lcm for both denominators
LCM(6, 10) = 30
Make all the denominators equal to each other
36
=
3 x 306 x 30
=
3 x 530
=
1530
-710
=
-7 x 3010 x 30
=
-7 x 330
=
-2130
1530
-
-2130
=
15 - -2130
=
3630
simplify the fraction
GCF(36, 30) = 6
3630
=
36 ÷ 630 ÷ 6
=
65
36
-
-710
=
65
20
1/9 - -13/8 =
125/72
Steps
19
-
-138
Find the lcm for both denominators
LCM(9, 8) = 72
Make all the denominators equal to each other
19
=
1 x 729 x 72
=
1 x 872
=
872
-138
=
-13 x 728 x 72
=
-13 x 972
=
-11772
872
-
-11772
=
8 - -11772
=
12572
19
-
-138
=
12572

## Worksheet: Subtracting the First Rational Number from the Second

Subtracting the first rational number from the second worksheet is the largest collection of practice problems and solved exercises which can be served as homework, classwork or assignment problems for the students to learn, practice, assess, iterate and master the skills of how to solve such fraction problems in basic mathematics.

Online Test
00:00
Start my Challenge
5/-11 - -13/1 = ?
5/-14 - 4/-9 = ?
5/-9 - 3/-2 = ?
-2/-3 - 2/-5 = ?
-5/-4 - 5/-2 = ?
-10/-9 - -2/9 = ?
-10/-14 - 9/-10 = ?
4/6 - -15/9 = ?
4/5 - 5/-12 = ?
5/6 - -4/-13 = ?

## Online Test: Subtracting the First Rational Number from the Second

This online test to find the subtracting the first rational number from the second is a formative assessment which can be used as homework, classwork or assignment problems to assess and improve the learner's math skills on fraction.

Input 1
Operation
Input 2
5/3 -8/5 = 1/15
show workout

## Work with steps - Fraction Subtraction

Question:
5/3 - 8/5 = ?
53
-
85
Find the lcm for both denominators
lcm_tools(3, 5) = 15
Make all the denominators equal to each other
53
=
5 x 153 x 15
=
5 x 515
=
2515
85
=
8 x 155 x 15
=
8 x 315
=
2415
2515
-
2415
=
25 - 2415
=
115
53
-
85
=
1/15

Fraction calculator is a key tool for users to generate step-by-step work to quickly understand the calculation, solve the homework problems, solve the classwork problems, prepare the answer key document for summative and formative assessments or immediately verify the entire calculation for the user supplied input values.