Subtract 7/18 from 4/56, Solve 4/56

Subtract 7/18 from 4/56

4/56 - 7/18 is -20/63.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 56 × 9 = 504,
4/56 = 4 × 9/56 × 9 = 36/504
Likewise, for the 2nd fraction, since 18 × 28 = 504,
7/18 = 7 × 28/18 × 28 = 196/504
Subtract the two like fractions:
36/504 - 196/504 = 36 - 196/504 = -160/504
After reducing the fraction, the answer is -20/63

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