Subtract 16/36 from 84/4, Solve 21 0/4

Subtract 16/36 from 84/4

1^st number: 21 0/4, 2^nd number: 16/36

84/4 - 16/36 is 185/9.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 36 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 4 × 9 = 36,
84/4 = 84 × 9/4 × 9 = 756/36
Likewise, for the 2nd fraction, since 36 × 1 = 36,
16/36 = 16 × 1/36 × 1 = 16/36
Subtract the two like fractions:
756/36 - 16/36 = 756 - 16/36 = 740/36
After reducing the fraction, the answer is 185/9
In mixed form: 205/9

MathStep (Works offline)

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