Subtract 42/28 from 72/8, Solve 9 0/8

Subtract 42/28 from 72/8

1^st number: 9 0/8, 2^nd number: 1 14/28

72/8 - 42/28 is 15/2.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 28 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 8 × 7 = 56,
72/8 = 72 × 7/8 × 7 = 504/56
Likewise, for the 2nd fraction, since 28 × 2 = 56,
42/28 = 42 × 2/28 × 2 = 84/56
Subtract the two like fractions:
504/56 - 84/56 = 504 - 84/56 = 420/56
After reducing the fraction, the answer is 15/2
In mixed form: 71/2

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