Subtract 56/49 from 42/60, Solve 42/60

Subtract 56/49 from 42/60

1^st number: 42/60, 2^nd number: 1 7/49

42/60 - 56/49 is -31/70.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 49 is 2940

Next, find the equivalent fraction of both fractional numbers with denominator 2940
For the 1st fraction, since 60 × 49 = 2940,
42/60 = 42 × 49/60 × 49 = 2058/2940
Likewise, for the 2nd fraction, since 49 × 60 = 2940,
56/49 = 56 × 60/49 × 60 = 3360/2940
Subtract the two like fractions:
2058/2940 - 3360/2940 = 2058 - 3360/2940 = -1302/2940
After reducing the fraction, the answer is -31/70

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