Subtract 7/27 from 20/30, Solve 20/30

Subtract 7/27 from 20/30

20/30 - 7/27 is 11/27.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 30 × 9 = 270,
20/30 = 20 × 9/30 × 9 = 180/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
7/27 = 7 × 10/27 × 10 = 70/270
Subtract the two like fractions:
180/270 - 70/270 = 180 - 70/270 = 110/270
After reducing the fraction, the answer is 11/27

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