Subtract 10/32 from 20/42, Solve 20/42

Subtract 10/32 from 20/42

20/42 - 10/32 is 55/336.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 42 × 16 = 672,
20/42 = 20 × 16/42 × 16 = 320/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
10/32 = 10 × 21/32 × 21 = 210/672
Subtract the two like fractions:
320/672 - 210/672 = 320 - 210/672 = 110/672
After reducing the fraction, the answer is 55/336

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