Subtract 75/56 from 7/40, Solve 7/40

Subtract 75/56 from 7/40

1^st number: 7/40, 2^nd number: 1 19/56

7/40 - 75/56 is -163/140.

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

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 40 × 7 = 280,
7/40 = 7 × 7/40 × 7 = 49/280
Likewise, for the 2nd fraction, since 56 × 5 = 280,
75/56 = 75 × 5/56 × 5 = 375/280
Subtract the two like fractions:
49/280 - 375/280 = 49 - 375/280 = -326/280
After reducing the fraction, the answer is -163/140

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