Subtract 21/27 from 36/35, Solve 1 1/35

Subtract 21/27 from 36/35

1^st number: 1 1/35, 2^nd number: 21/27

36/35 - 21/27 is 79/315.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 27 is 945

Next, find the equivalent fraction of both fractional numbers with denominator 945
For the 1st fraction, since 35 × 27 = 945,
36/35 = 36 × 27/35 × 27 = 972/945
Likewise, for the 2nd fraction, since 27 × 35 = 945,
21/27 = 21 × 35/27 × 35 = 735/945
Subtract the two like fractions:
972/945 - 735/945 = 972 - 735/945 = 237/945
After reducing the fraction, the answer is 79/315

MathStep (Works offline)

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