Subtract 7/30 from 4/56, Solve 4/56

Subtract 7/30 from 4/56

4/56 - 7/30 is -17/105.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 56 × 15 = 840,
4/56 = 4 × 15/56 × 15 = 60/840
Likewise, for the 2nd fraction, since 30 × 28 = 840,
7/30 = 7 × 28/30 × 28 = 196/840
Subtract the two like fractions:
60/840 - 196/840 = 60 - 196/840 = -136/840
After reducing the fraction, the answer is -17/105

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