Subtract 3/27 from 1/20, Solve 1/20

Subtract 3/27 from 1/20

1/20 - 3/27 is -11/180.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 20 × 27 = 540,
1/20 = 1 × 27/20 × 27 = 27/540
Likewise, for the 2nd fraction, since 27 × 20 = 540,
3/27 = 3 × 20/27 × 20 = 60/540
Subtract the two like fractions:
27/540 - 60/540 = 27 - 60/540 = -33/540
After reducing the fraction, the answer is -11/180

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