Subtract 56/15 from 30/27, Solve 1 3/27

Subtract 56/15 from 30/27

1^st number: 1 3/27, 2^nd number: 3 11/15

30/27 - 56/15 is -118/45.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 27 × 5 = 135,
30/27 = 30 × 5/27 × 5 = 150/135
Likewise, for the 2nd fraction, since 15 × 9 = 135,
56/15 = 56 × 9/15 × 9 = 504/135
Subtract the two like fractions:
150/135 - 504/135 = 150 - 504/135 = -354/135
After reducing the fraction, the answer is -118/45

MathStep (Works offline)

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