Subtract 3/84 from 63/3, Solve 21 0/3

Subtract 3/84 from 63/3

1^st number: 21 0/3, 2^nd number: 3/84

63/3 - 3/84 is 587/28.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 3 × 28 = 84,
63/3 = 63 × 28/3 × 28 = 1764/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
3/84 = 3 × 1/84 × 1 = 3/84
Subtract the two like fractions:
1764/84 - 3/84 = 1764 - 3/84 = 1761/84
After reducing the fraction, the answer is 587/28
In mixed form: 2027/28

MathStep (Works offline)

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