Subtract 28/49 from 18/12, Solve 1 6/12

Subtract 28/49 from 18/12

1^st number: 1 6/12, 2^nd number: 28/49

18/12 - 28/49 is 13/14.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 49 is 588

Next, find the equivalent fraction of both fractional numbers with denominator 588
For the 1st fraction, since 12 × 49 = 588,
18/12 = 18 × 49/12 × 49 = 882/588
Likewise, for the 2nd fraction, since 49 × 12 = 588,
28/49 = 28 × 12/49 × 12 = 336/588
Subtract the two like fractions:
882/588 - 336/588 = 882 - 336/588 = 546/588
After reducing the fraction, the answer is 13/14

MathStep (Works offline)

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