Subtract 15/4 from 36/63, Solve 36/63

Subtract 15/4 from 36/63

1^st number: 36/63, 2^nd number: 3 3/4

36/63 - 15/4 is -89/28.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 4 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 63 × 4 = 252,
36/63 = 36 × 4/63 × 4 = 144/252
Likewise, for the 2nd fraction, since 4 × 63 = 252,
15/4 = 15 × 63/4 × 63 = 945/252
Subtract the two like fractions:
144/252 - 945/252 = 144 - 945/252 = -801/252
After reducing the fraction, the answer is -89/28

MathStep (Works offline)

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