Subtract 15/18 from 28/16, Solve 1 12/16

Subtract 15/18 from 28/16

1^st number: 1 12/16, 2^nd number: 15/18

28/16 - 15/18 is 11/12.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144

Next, find the equivalent fraction of both fractional numbers with denominator 144
For the 1st fraction, since 16 × 9 = 144,
28/16 = 28 × 9/16 × 9 = 252/144
Likewise, for the 2nd fraction, since 18 × 8 = 144,
15/18 = 15 × 8/18 × 8 = 120/144
Subtract the two like fractions:
252/144 - 120/144 = 252 - 120/144 = 132/144
After reducing the fraction, the answer is 11/12

MathStep (Works offline)

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