Subtract 21/84 from 56/2, Solve 28 0/2

Subtract 21/84 from 56/2

1^st number: 28 0/2, 2^nd number: 21/84

56/2 - 21/84 is 111/4.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 2 × 42 = 84,
56/2 = 56 × 42/2 × 42 = 2352/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84
Subtract the two like fractions:
2352/84 - 21/84 = 2352 - 21/84 = 2331/84
After reducing the fraction, the answer is 111/4
In mixed form: 273/4

MathStep (Works offline)

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