Subtract 84/64 from 5/21
1st number: 5/21, 2nd number: 1 20/64
5/21 - 84/64 is -361/336.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 21 × 64 = 1344,
5/21 = 5 × 64/21 × 64 = 320/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
84/64 = 84 × 21/64 × 21 = 1764/1344 - Subtract the two like fractions:
320/1344 - 1764/1344 = 320 - 1764/1344 = -1444/1344 - After reducing the fraction, the answer is -361/336
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