Subtract 5/4 from 42/27, Solve 1 15/27

Subtract 5/4 from 42/27

1^st number: 1 15/27, 2^nd number: 1 1/4

42/27 - 5/4 is 11/36.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 4 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 27 × 4 = 108,
42/27 = 42 × 4/27 × 4 = 168/108
Likewise, for the 2nd fraction, since 4 × 27 = 108,
5/4 = 5 × 27/4 × 27 = 135/108
Subtract the two like fractions:
168/108 - 135/108 = 168 - 135/108 = 33/108
After reducing the fraction, the answer is 11/36

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