Subtract 21/63 from 72/49, Solve 1 23/49

Subtract 21/63 from 72/49

1^st number: 1 23/49, 2^nd number: 21/63

72/49 - 21/63 is 167/147.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 63 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 49 × 9 = 441,
72/49 = 72 × 9/49 × 9 = 648/441
Likewise, for the 2nd fraction, since 63 × 7 = 441,
21/63 = 21 × 7/63 × 7 = 147/441
Subtract the two like fractions:
648/441 - 147/441 = 648 - 147/441 = 501/441
After reducing the fraction, the answer is 167/147
In mixed form: 120/147

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