Subtract 4/56 from 20/49, Solve 20/49

Subtract 4/56 from 20/49

20/49 - 4/56 is 33/98.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 56 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 49 × 8 = 392,
20/49 = 20 × 8/49 × 8 = 160/392
Likewise, for the 2nd fraction, since 56 × 7 = 392,
4/56 = 4 × 7/56 × 7 = 28/392
Subtract the two like fractions:
160/392 - 28/392 = 160 - 28/392 = 132/392
After reducing the fraction, the answer is 33/98

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