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

Subtract 30/56 from 4/30

4/30 - 30/56 is -169/420.

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

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 30 × 28 = 840,
4/30 = 4 × 28/30 × 28 = 112/840
Likewise, for the 2nd fraction, since 56 × 15 = 840,
30/56 = 30 × 15/56 × 15 = 450/840
Subtract the two like fractions:
112/840 - 450/840 = 112 - 450/840 = -338/840
After reducing the fraction, the answer is -169/420

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