Subtract 21/63 from 72/14, Solve 5 2/14

Subtract 21/63 from 72/14

1^st number: 5 2/14, 2^nd number: 21/63

72/14 - 21/63 is 101/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 14 × 9 = 126,
72/14 = 72 × 9/14 × 9 = 648/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126
Subtract the two like fractions:
648/126 - 42/126 = 648 - 42/126 = 606/126
After reducing the fraction, the answer is 101/21
In mixed form: 417/21

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