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

Subtract 15/8 from 12/63

1^st number: 12/63, 2^nd number: 1 7/8

12/63 - 15/8 is -283/168.

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,
12/63 = 12 × 8/63 × 8 = 96/504
Likewise, for the 2nd fraction, since 8 × 63 = 504,
15/8 = 15 × 63/8 × 63 = 945/504
Subtract the two like fractions:
96/504 - 945/504 = 96 - 945/504 = -849/504
After reducing the fraction, the answer is -283/168

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