Subtract 21/54 from 18/14, Solve 1 4/14

Subtract 21/54 from 18/14

1^st number: 1 4/14, 2^nd number: 21/54

18/14 - 21/54 is 113/126.

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,
18/14 = 18 × 27/14 × 27 = 486/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378
Subtract the two like fractions:
486/378 - 147/378 = 486 - 147/378 = 339/378
After reducing the fraction, the answer is 113/126

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