Subtract 56/49 from 15/42, Solve 15/42

Subtract 56/49 from 15/42

1^st number: 15/42, 2^nd number: 1 7/49

15/42 - 56/49 is -11/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 42 × 7 = 294,
15/42 = 15 × 7/42 × 7 = 105/294
Likewise, for the 2nd fraction, since 49 × 6 = 294,
56/49 = 56 × 6/49 × 6 = 336/294
Subtract the two like fractions:
105/294 - 336/294 = 105 - 336/294 = -231/294
After reducing the fraction, the answer is -11/14

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