Subtract 20/27 from 28/64
28/64 - 20/27 is -131/432.
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,
28/64 = 28 × 27/64 × 27 = 756/1728 - Likewise, for the 2nd fraction, since 27 × 64 = 1728,
20/27 = 20 × 64/27 × 64 = 1280/1728 - Subtract the two like fractions:
756/1728 - 1280/1728 = 756 - 1280/1728 = -524/1728 - After reducing the fraction, the answer is -131/432
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