Subtract 7/5 from 28/63, Solve 28/63

Subtract 7/5 from 28/63

1^st number: 28/63, 2^nd number: 1 2/5

28/63 - 7/5 is -43/45.

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,
28/63 = 28 × 5/63 × 5 = 140/315
Likewise, for the 2nd fraction, since 5 × 63 = 315,
7/5 = 7 × 63/5 × 63 = 441/315
Subtract the two like fractions:
140/315 - 441/315 = 140 - 441/315 = -301/315
After reducing the fraction, the answer is -43/45

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