Subtract 75/5 from 15/63, Solve 15/63

Subtract 75/5 from 15/63

1^st number: 15/63, 2^nd number: 15 0/5

15/63 - 75/5 is -310/21.

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,
15/63 = 15 × 5/63 × 5 = 75/315
Likewise, for the 2nd fraction, since 5 × 63 = 315,
75/5 = 75 × 63/5 × 63 = 4725/315
Subtract the two like fractions:
75/315 - 4725/315 = 75 - 4725/315 = -4650/315
After reducing the fraction, the answer is -310/21

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