Subtract 56/15 from 15/63, Solve 15/63

Subtract 56/15 from 15/63

1^st number: 15/63, 2^nd number: 3 11/15

15/63 - 56/15 is -367/105.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 63 × 5 = 315,
15/63 = 15 × 5/63 × 5 = 75/315
Likewise, for the 2nd fraction, since 15 × 21 = 315,
56/15 = 56 × 21/15 × 21 = 1176/315
Subtract the two like fractions:
75/315 - 1176/315 = 75 - 1176/315 = -1101/315
After reducing the fraction, the answer is -367/105

MathStep (Works offline)

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