Subtract 81/40 from 5/56, Solve 5/56

Subtract 81/40 from 5/56

1^st number: 5/56, 2^nd number: 2 1/40

5/56 - 81/40 is -271/140.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 56 × 5 = 280,
5/56 = 5 × 5/56 × 5 = 25/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280
Subtract the two like fractions:
25/280 - 567/280 = 25 - 567/280 = -542/280
After reducing the fraction, the answer is -271/140

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