Subtract 5/42 from 20/64, Solve 20/64

Subtract 5/42 from 20/64

20/64 - 5/42 is 65/336.

Find the least common denominator or LCM of the two denominators:
LCM of 64 and 42 is 1344

Next, find the equivalent fraction of both fractional numbers with denominator 1344
For the 1st fraction, since 64 × 21 = 1344,
20/64 = 20 × 21/64 × 21 = 420/1344
Likewise, for the 2nd fraction, since 42 × 32 = 1344,
5/42 = 5 × 32/42 × 32 = 160/1344
Subtract the two like fractions:
420/1344 - 160/1344 = 420 - 160/1344 = 260/1344
After reducing the fraction, the answer is 65/336

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