Subtract 63/84 from 27/56, Solve 27/56

Subtract 63/84 from 27/56

27/56 - 63/84 is -15/56.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 56 × 3 = 168,
27/56 = 27 × 3/56 × 3 = 81/168
Likewise, for the 2nd fraction, since 84 × 2 = 168,
63/84 = 63 × 2/84 × 2 = 126/168
Subtract the two like fractions:
81/168 - 126/168 = 81 - 126/168 = -45/168
After reducing the fraction, the answer is -15/56

MathStep (Works offline)

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