Subtract 21/25 from 20/64
20/64 - 21/25 is -211/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 25 is 1600
Next, find the equivalent fraction of both fractional numbers with denominator 1600 - For the 1st fraction, since 64 × 25 = 1600,
20/64 = 20 × 25/64 × 25 = 500/1600 - Likewise, for the 2nd fraction, since 25 × 64 = 1600,
21/25 = 21 × 64/25 × 64 = 1344/1600 - Subtract the two like fractions:
500/1600 - 1344/1600 = 500 - 1344/1600 = -844/1600 - After reducing the fraction, the answer is -211/400
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