Subtract 21/15 from 10/32
1st number: 10/32, 2nd number: 1 6/15
10/32 - 21/15 is -87/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 15 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 32 × 15 = 480,
10/32 = 10 × 15/32 × 15 = 150/480 - Likewise, for the 2nd fraction, since 15 × 32 = 480,
21/15 = 21 × 32/15 × 32 = 672/480 - Subtract the two like fractions:
150/480 - 672/480 = 150 - 672/480 = -522/480 - After reducing the fraction, the answer is -87/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/32-21/15 10/32-42/15 10/64-21/15 10/32-21/30 30/32-21/15 10/32-63/15 10/96-21/15 10/32-21/45 50/32-21/15 10/32-21/75 70/32-21/15