Subtract 42/8 from 63/7, Solve 9 0/7

Subtract 42/8 from 63/7

1^st number: 9 0/7, 2^nd number: 5 2/8

63/7 - 42/8 is 15/4.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 7 × 8 = 56,
63/7 = 63 × 8/7 × 8 = 504/56
Likewise, for the 2nd fraction, since 8 × 7 = 56,
42/8 = 42 × 7/8 × 7 = 294/56
Subtract the two like fractions:
504/56 - 294/56 = 504 - 294/56 = 210/56
After reducing the fraction, the answer is 15/4
In mixed form: 33/4

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