Subtract 15/24 from 60/42, Solve 1 18/42

Subtract 15/24 from 60/42

1^st number: 1 18/42, 2^nd number: 15/24

60/42 - 15/24 is 45/56.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 42 × 4 = 168,
60/42 = 60 × 4/42 × 4 = 240/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
15/24 = 15 × 7/24 × 7 = 105/168
Subtract the two like fractions:
240/168 - 105/168 = 240 - 105/168 = 135/168
After reducing the fraction, the answer is 45/56

MathStep (Works offline)

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