Subtract 10/15 from 35/21, Solve 1 14/21

Subtract 10/15 from 35/21

1^st number: 1 14/21, 2^nd number: 10/15

35/21 - 10/15 is 1/1.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
35/21 = 35 × 5/21 × 5 = 175/105
Likewise, for the 2nd fraction, since 15 × 7 = 105,
10/15 = 10 × 7/15 × 7 = 70/105
Subtract the two like fractions:
175/105 - 70/105 = 175 - 70/105 = 105/105
After reducing the fraction, the answer is 1/1

MathStep (Works offline)

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