Subtract 2/32 from 4/21, Solve 4/21

Subtract 2/32 from 4/21

4/21 - 2/32 is 43/336.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
4/21 = 4 × 32/21 × 32 = 128/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
2/32 = 2 × 21/32 × 21 = 42/672
Subtract the two like fractions:
128/672 - 42/672 = 128 - 42/672 = 86/672
After reducing the fraction, the answer is 43/336

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