Subtract 56/49 from 15/54, Solve 15/54

Subtract 56/49 from 15/54

1^st number: 15/54, 2^nd number: 1 7/49

15/54 - 56/49 is -109/126.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 49 is 2646

Next, find the equivalent fraction of both fractional numbers with denominator 2646
For the 1st fraction, since 54 × 49 = 2646,
15/54 = 15 × 49/54 × 49 = 735/2646
Likewise, for the 2nd fraction, since 49 × 54 = 2646,
56/49 = 56 × 54/49 × 54 = 3024/2646
Subtract the two like fractions:
735/2646 - 3024/2646 = 735 - 3024/2646 = -2289/2646
After reducing the fraction, the answer is -109/126

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