Subtract 72/20 from 6/27, Solve 6/27

Subtract 72/20 from 6/27

1^st number: 6/27, 2^nd number: 3 12/20

6/27 - 72/20 is -152/45.

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

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 27 × 20 = 540,
6/27 = 6 × 20/27 × 20 = 120/540
Likewise, for the 2nd fraction, since 20 × 27 = 540,
72/20 = 72 × 27/20 × 27 = 1944/540
Subtract the two like fractions:
120/540 - 1944/540 = 120 - 1944/540 = -1824/540
After reducing the fraction, the answer is -152/45

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