Subtract 20/25 from 7/27, Solve 7/27

Subtract 20/25 from 7/27

7/27 - 20/25 is -73/135.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 25 is 675

Next, find the equivalent fraction of both fractional numbers with denominator 675
For the 1st fraction, since 27 × 25 = 675,
7/27 = 7 × 25/27 × 25 = 175/675
Likewise, for the 2nd fraction, since 25 × 27 = 675,
20/25 = 20 × 27/25 × 27 = 540/675
Subtract the two like fractions:
175/675 - 540/675 = 175 - 540/675 = -365/675
After reducing the fraction, the answer is -73/135

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