Subtract 60/9 from 27/42, Solve 27/42

Subtract 60/9 from 27/42

1^st number: 27/42, 2^nd number: 6 6/9

27/42 - 60/9 is -253/42.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
27/42 = 27 × 3/42 × 3 = 81/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
60/9 = 60 × 14/9 × 14 = 840/126
Subtract the two like fractions:
81/126 - 840/126 = 81 - 840/126 = -759/126
After reducing the fraction, the answer is -253/42

MathStep (Works offline)

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