Subtract 56/14 from 15/72, Solve 15/72

Subtract 56/14 from 15/72

1^st number: 15/72, 2^nd number: 4 0/14

15/72 - 56/14 is -91/24.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 14 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
15/72 = 15 × 7/72 × 7 = 105/504
Likewise, for the 2nd fraction, since 14 × 36 = 504,
56/14 = 56 × 36/14 × 36 = 2016/504
Subtract the two like fractions:
105/504 - 2016/504 = 105 - 2016/504 = -1911/504
After reducing the fraction, the answer is -91/24

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