Subtract 20/35 from 14/12, Solve 1 2/12

Subtract 20/35 from 14/12

1^st number: 1 2/12, 2^nd number: 20/35

14/12 - 20/35 is 25/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
14/12 = 14 × 35/12 × 35 = 490/420
Likewise, for the 2nd fraction, since 35 × 12 = 420,
20/35 = 20 × 12/35 × 12 = 240/420
Subtract the two like fractions:
490/420 - 240/420 = 490 - 240/420 = 250/420
After reducing the fraction, the answer is 25/42

MathStep (Works offline)

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