Subtract 20/21 from 35/64
35/64 - 20/21 is -545/1344.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 21 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 64 × 21 = 1344,
35/64 = 35 × 21/64 × 21 = 735/1344 - Likewise, for the 2nd fraction, since 21 × 64 = 1344,
20/21 = 20 × 64/21 × 64 = 1280/1344 - Subtract the two like fractions:
735/1344 - 1280/1344 = 735 - 1280/1344 = -545/1344
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