Subtract 21/24 from 20/2, Solve 10 0/2

Subtract 21/24 from 20/2

1^st number: 10 0/2, 2^nd number: 21/24

20/2 - 21/24 is 73/8.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 24 is 24

Next, find the equivalent fraction of both fractional numbers with denominator 24
For the 1st fraction, since 2 × 12 = 24,
20/2 = 20 × 12/2 × 12 = 240/24
Likewise, for the 2nd fraction, since 24 × 1 = 24,
21/24 = 21 × 1/24 × 1 = 21/24
Subtract the two like fractions:
240/24 - 21/24 = 240 - 21/24 = 219/24
After reducing the fraction, the answer is 73/8
In mixed form: 91/8

MathStep (Works offline)

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