Subtract 75/63 from 7/15, Solve 7/15

Subtract 75/63 from 7/15

1^st number: 7/15, 2^nd number: 1 12/63

7/15 - 75/63 is -76/105.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 15 × 21 = 315,
7/15 = 7 × 21/15 × 21 = 147/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
75/63 = 75 × 5/63 × 5 = 375/315
Subtract the two like fractions:
147/315 - 375/315 = 147 - 375/315 = -228/315
After reducing the fraction, the answer is -76/105

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