Subtract 4/49 from 20/90, Solve 20/90

Subtract 4/49 from 20/90

20/90 - 4/49 is 62/441.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410

Next, find the equivalent fraction of both fractional numbers with denominator 4410
For the 1st fraction, since 90 × 49 = 4410,
20/90 = 20 × 49/90 × 49 = 980/4410
Likewise, for the 2nd fraction, since 49 × 90 = 4410,
4/49 = 4 × 90/49 × 90 = 360/4410
Subtract the two like fractions:
980/4410 - 360/4410 = 980 - 360/4410 = 620/4410
After reducing the fraction, the answer is 62/441

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