Subtract 4/8 from 15/63, Solve 15/63

Subtract 4/8 from 15/63

15/63 - 4/8 is -11/42.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 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 8 × 63 = 504,
4/8 = 4 × 63/8 × 63 = 252/504
Subtract the two like fractions:
120/504 - 252/504 = 120 - 252/504 = -132/504
After reducing the fraction, the answer is -11/42

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