Subtract 1/5 from 72/63, Solve 1 9/63

Subtract 1/5 from 72/63

1^st number: 1 9/63, 2^nd number: 1/5

72/63 - 1/5 is 33/35.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 5 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 63 × 5 = 315,
72/63 = 72 × 5/63 × 5 = 360/315
Likewise, for the 2nd fraction, since 5 × 63 = 315,
1/5 = 1 × 63/5 × 63 = 63/315
Subtract the two like fractions:
360/315 - 63/315 = 360 - 63/315 = 297/315
After reducing the fraction, the answer is 33/35

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