Subtract 6/72 from 48/21, Solve 2 6/21

Subtract 6/72 from 48/21

1^st number: 2 6/21, 2^nd number: 6/72

48/21 - 6/72 is 185/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
48/21 = 48 × 24/21 × 24 = 1152/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
6/72 = 6 × 7/72 × 7 = 42/504
Subtract the two like fractions:
1152/504 - 42/504 = 1152 - 42/504 = 1110/504
After reducing the fraction, the answer is 185/84
In mixed form: 217/84

MathStep (Works offline)

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