Subtract 7/8 from 48/42, Solve 1 6/42

Subtract 7/8 from 48/42

1^st number: 1 6/42, 2^nd number: 7/8

48/42 - 7/8 is 15/56.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 42 × 4 = 168,
48/42 = 48 × 4/42 × 4 = 192/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
7/8 = 7 × 21/8 × 21 = 147/168
Subtract the two like fractions:
192/168 - 147/168 = 192 - 147/168 = 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