Subtract 8/63 from 28/12, Solve 2 4/12

Subtract 8/63 from 28/12

1^st number: 2 4/12, 2^nd number: 8/63

28/12 - 8/63 is 139/63.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
28/12 = 28 × 21/12 × 21 = 588/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
8/63 = 8 × 4/63 × 4 = 32/252
Subtract the two like fractions:
588/252 - 32/252 = 588 - 32/252 = 556/252
After reducing the fraction, the answer is 139/63
In mixed form: 213/63

MathStep (Works offline)

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