Subtract 40/7 from 30/56
1st number: 30/56, 2nd number: 5 5/7
30/56 - 40/7 is -145/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
30/56 = 30 × 1/56 × 1 = 30/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
40/7 = 40 × 8/7 × 8 = 320/56 - Subtract the two like fractions:
30/56 - 320/56 = 30 - 320/56 = -290/56 - After reducing the fraction, the answer is -145/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56-40/7 30/56-80/7 30/56-40/14 90/56-40/7 30/56-40/21 30/56-40/35 30/56-40/49