Subtract 21/27 from 7/64
7/64 - 21/27 is -385/576.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 27 is 1728
Next, find the equivalent fraction of both fractional numbers with denominator 1728 - For the 1st fraction, since 64 × 27 = 1728,
7/64 = 7 × 27/64 × 27 = 189/1728 - Likewise, for the 2nd fraction, since 27 × 64 = 1728,
21/27 = 21 × 64/27 × 64 = 1344/1728 - Subtract the two like fractions:
189/1728 - 1344/1728 = 189 - 1344/1728 = -1155/1728 - After reducing the fraction, the answer is -385/576
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