Subtract 4/20 from 72/27, Solve 2 18/27

Subtract 4/20 from 72/27

1^st number: 2 18/27, 2^nd number: 4/20

72/27 - 4/20 is 37/15.

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,
72/27 = 72 × 20/27 × 20 = 1440/540
Likewise, for the 2nd fraction, since 20 × 27 = 540,
4/20 = 4 × 27/20 × 27 = 108/540
Subtract the two like fractions:
1440/540 - 108/540 = 1440 - 108/540 = 1332/540
After reducing the fraction, the answer is 37/15
In mixed form: 27/15

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