Subtract 72/63 from 48/21, Solve 2 6/21

Subtract 72/63 from 48/21

1^st number: 2 6/21, 2^nd number: 1 9/63

48/21 - 72/63 is 8/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 21 × 3 = 63,
48/21 = 48 × 3/21 × 3 = 144/63
Likewise, for the 2nd fraction, since 63 × 1 = 63,
72/63 = 72 × 1/63 × 1 = 72/63
Subtract the two like fractions:
144/63 - 72/63 = 144 - 72/63 = 72/63
After reducing the fraction, the answer is 8/7
In mixed form: 11/7

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