Subtract 21/7 from 1/32, Solve 1/32

Subtract 21/7 from 1/32

1^st number: 1/32, 2^nd number: 3 0/7

1/32 - 21/7 is -95/32.

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,
1/32 = 1 × 7/32 × 7 = 7/224
Likewise, for the 2nd fraction, since 7 × 32 = 224,
21/7 = 21 × 32/7 × 32 = 672/224
Subtract the two like fractions:
7/224 - 672/224 = 7 - 672/224 = -665/224
After reducing the fraction, the answer is -95/32

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad