Subtract 40/56 from 90/75, Solve 1 15/75

Subtract 40/56 from 90/75

1^st number: 1 15/75, 2^nd number: 40/56

90/75 - 40/56 is 17/35.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 56 is 4200

Next, find the equivalent fraction of both fractional numbers with denominator 4200
For the 1st fraction, since 75 × 56 = 4200,
90/75 = 90 × 56/75 × 56 = 5040/4200
Likewise, for the 2nd fraction, since 56 × 75 = 4200,
40/56 = 40 × 75/56 × 75 = 3000/4200
Subtract the two like fractions:
5040/4200 - 3000/4200 = 5040 - 3000/4200 = 2040/4200
After reducing the fraction, the answer is 17/35

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