Subtract 72/56 from 81/2, Solve 40 1/2

Subtract 72/56 from 81/2

1^st number: 40 1/2, 2^nd number: 1 16/56

81/2 - 72/56 is 549/14.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 56 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 2 × 28 = 56,
81/2 = 81 × 28/2 × 28 = 2268/56
Likewise, for the 2nd fraction, since 56 × 1 = 56,
72/56 = 72 × 1/56 × 1 = 72/56
Subtract the two like fractions:
2268/56 - 72/56 = 2268 - 72/56 = 2196/56
After reducing the fraction, the answer is 549/14
In mixed form: 393/14

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