Subtract 20/32 from 16/21
16/21 - 20/32 is 23/168.
Steps for subtracting fractions
- 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,
16/21 = 16 × 32/21 × 32 = 512/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
20/32 = 20 × 21/32 × 21 = 420/672 - Subtract the two like fractions:
512/672 - 420/672 = 512 - 420/672 = 92/672 - After reducing the fraction, the answer is 23/168
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