Subtract 32/72 from 15/7, Solve 2 1/7

Subtract 32/72 from 15/7

1^st number: 2 1/7, 2^nd number: 32/72

15/7 - 32/72 is 107/63.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 7 × 72 = 504,
15/7 = 15 × 72/7 × 72 = 1080/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
32/72 = 32 × 7/72 × 7 = 224/504
Subtract the two like fractions:
1080/504 - 224/504 = 1080 - 224/504 = 856/504
After reducing the fraction, the answer is 107/63
In mixed form: 144/63

MathStep (Works offline)

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