Subtract 12/8 from 15/63, Solve 15/63

Subtract 12/8 from 15/63

1^st number: 15/63, 2^nd number: 1 4/8

15/63 - 12/8 is -53/42.

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,
12/8 = 12 × 63/8 × 63 = 756/504
Subtract the two like fractions:
120/504 - 756/504 = 120 - 756/504 = -636/504
After reducing the fraction, the answer is -53/42

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