Subtract 30/60 from 42/56, Solve 42/56

Subtract 30/60 from 42/56

42/56 - 30/60 is 1/4.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 60 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 56 × 15 = 840,
42/56 = 42 × 15/56 × 15 = 630/840
Likewise, for the 2nd fraction, since 60 × 14 = 840,
30/60 = 30 × 14/60 × 14 = 420/840
Subtract the two like fractions:
630/840 - 420/840 = 630 - 420/840 = 210/840
After reducing the fraction, the answer is 1/4

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