Subtract 90/54 from 30/14, Solve 2 2/14

Subtract 90/54 from 30/14

1^st number: 2 2/14, 2^nd number: 1 36/54

30/14 - 90/54 is 10/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 14 × 27 = 378,
30/14 = 30 × 27/14 × 27 = 810/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378
Subtract the two like fractions:
810/378 - 630/378 = 810 - 630/378 = 180/378
After reducing the fraction, the answer is 10/21

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