Subtract 8/7 from 20/32
1st number: 20/32, 2nd number: 1 1/7
20/32 - 8/7 is -29/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 7 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 32 × 7 = 224,
20/32 = 20 × 7/32 × 7 = 140/224 - Likewise, for the 2nd fraction, since 7 × 32 = 224,
8/7 = 8 × 32/7 × 32 = 256/224 - Subtract the two like fractions:
140/224 - 256/224 = 140 - 256/224 = -116/224 - After reducing the fraction, the answer is -29/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/32-8/7 20/32-16/7 20/64-8/7 20/32-8/14 60/32-8/7 20/32-24/7 20/96-8/7 20/32-8/21 20/32-40/7 20/32-8/35 20/32-56/7 20/32-8/49