Subtract 4/7 from 90/36, Solve 2 18/36

Subtract 4/7 from 90/36

1^st number: 2 18/36, 2^nd number: 4/7

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

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252
Likewise, for the 2nd fraction, since 7 × 36 = 252,
4/7 = 4 × 36/7 × 36 = 144/252
Subtract the two like fractions:
630/252 - 144/252 = 630 - 144/252 = 486/252
After reducing the fraction, the answer is 27/14
In mixed form: 113/14

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