Subtract 15/27 from 2/20, Solve 2/20

Subtract 15/27 from 2/20

2/20 - 15/27 is -41/90.

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,
2/20 = 2 × 27/20 × 27 = 54/540
Likewise, for the 2nd fraction, since 27 × 20 = 540,
15/27 = 15 × 20/27 × 20 = 300/540
Subtract the two like fractions:
54/540 - 300/540 = 54 - 300/540 = -246/540
After reducing the fraction, the answer is -41/90

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