Subtract 90/36 from 27/14, Solve 1 13/14

Subtract 90/36 from 27/14

1^st number: 1 13/14, 2^nd number: 2 18/36

27/14 - 90/36 is -4/7.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 14 × 18 = 252,
27/14 = 27 × 18/14 × 18 = 486/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252
Subtract the two like fractions:
486/252 - 630/252 = 486 - 630/252 = -144/252
After reducing the fraction, the answer is -4/7

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