Subtract 6/84 from 60/20, Solve 3 0/20

Subtract 6/84 from 60/20

1^st number: 3 0/20, 2^nd number: 6/84

60/20 - 6/84 is 41/14.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
6/84 = 6 × 5/84 × 5 = 30/420
Subtract the two like fractions:
1260/420 - 30/420 = 1260 - 30/420 = 1230/420
After reducing the fraction, the answer is 41/14
In mixed form: 213/14

MathStep (Works offline)

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