Subtract 2/36 from 49/21, Solve 2 7/21

Subtract 2/36 from 49/21

1^st number: 2 7/21, 2^nd number: 2/36

49/21 - 2/36 is 41/18.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 21 × 12 = 252,
49/21 = 49 × 12/21 × 12 = 588/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
2/36 = 2 × 7/36 × 7 = 14/252
Subtract the two like fractions:
588/252 - 14/252 = 588 - 14/252 = 574/252
After reducing the fraction, the answer is 41/18
In mixed form: 25/18

MathStep (Works offline)

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