Subtract 3/36 from 35/21, Solve 1 14/21

Subtract 3/36 from 35/21

1^st number: 1 14/21, 2^nd number: 3/36

35/21 - 3/36 is 19/12.

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,
35/21 = 35 × 12/21 × 12 = 420/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252
Subtract the two like fractions:
420/252 - 21/252 = 420 - 21/252 = 399/252
After reducing the fraction, the answer is 19/12
In mixed form: 17/12

MathStep (Works offline)

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