Subtract 21/64 from 15/27, Solve 15/27

Subtract 21/64 from 15/27

15/27 - 21/64 is 131/576.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 64 is 1728

Next, find the equivalent fraction of both fractional numbers with denominator 1728
For the 1st fraction, since 27 × 64 = 1728,
15/27 = 15 × 64/27 × 64 = 960/1728
Likewise, for the 2nd fraction, since 64 × 27 = 1728,
21/64 = 21 × 27/64 × 27 = 567/1728
Subtract the two like fractions:
960/1728 - 567/1728 = 960 - 567/1728 = 393/1728
After reducing the fraction, the answer is 131/576

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