Subtract 14/49 from 21/14, Solve 1 7/14

Subtract 14/49 from 21/14

1^st number: 1 7/14, 2^nd number: 14/49

21/14 - 14/49 is 17/14.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 49 is 98

Next, find the equivalent fraction of both fractional numbers with denominator 98
For the 1st fraction, since 14 × 7 = 98,
21/14 = 21 × 7/14 × 7 = 147/98
Likewise, for the 2nd fraction, since 49 × 2 = 98,
14/49 = 14 × 2/49 × 2 = 28/98
Subtract the two like fractions:
147/98 - 28/98 = 147 - 28/98 = 119/98
After reducing the fraction, the answer is 17/14
In mixed form: 13/14

MathStep (Works offline)

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