Subtract 36/16 from 12/84, Solve 12/84

Subtract 36/16 from 12/84

1^st number: 12/84, 2^nd number: 2 4/16

12/84 - 36/16 is -59/28.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 84 × 4 = 336,
12/84 = 12 × 4/84 × 4 = 48/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
36/16 = 36 × 21/16 × 21 = 756/336
Subtract the two like fractions:
48/336 - 756/336 = 48 - 756/336 = -708/336
After reducing the fraction, the answer is -59/28

MathStep (Works offline)

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