Subtract 25/27 from 30/64, Solve 30/64

Subtract 25/27 from 30/64

30/64 - 25/27 is -395/864.

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,
30/64 = 30 × 27/64 × 27 = 810/1728
Likewise, for the 2nd fraction, since 27 × 64 = 1728,
25/27 = 25 × 64/27 × 64 = 1600/1728
Subtract the two like fractions:
810/1728 - 1600/1728 = 810 - 1600/1728 = -790/1728
After reducing the fraction, the answer is -395/864

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