Subtract 4/72 from 15/63, Solve 15/63

Subtract 4/72 from 15/63

15/63 - 4/72 is 23/126.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 63 × 8 = 504,
15/63 = 15 × 8/63 × 8 = 120/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504
Subtract the two like fractions:
120/504 - 28/504 = 120 - 28/504 = 92/504
After reducing the fraction, the answer is 23/126

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