Subtract 15/7 from 20/32
1st number: 20/32, 2nd number: 2 1/7
20/32 - 15/7 is -85/56.
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,
15/7 = 15 × 32/7 × 32 = 480/224 - Subtract the two like fractions:
140/224 - 480/224 = 140 - 480/224 = -340/224 - After reducing the fraction, the answer is -85/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/32-15/7 20/32-30/7 20/64-15/7 20/32-15/14 60/32-15/7 20/32-45/7 20/96-15/7 20/32-15/21 20/32-75/7 20/32-15/35 20/32-15/49