Subtract 30/56 from 72/54, Solve 1 18/54

Subtract 30/56 from 72/54

1^st number: 1 18/54, 2^nd number: 30/56

72/54 - 30/56 is 67/84.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 56 is 1512

Next, find the equivalent fraction of both fractional numbers with denominator 1512
For the 1st fraction, since 54 × 28 = 1512,
72/54 = 72 × 28/54 × 28 = 2016/1512
Likewise, for the 2nd fraction, since 56 × 27 = 1512,
30/56 = 30 × 27/56 × 27 = 810/1512
Subtract the two like fractions:
2016/1512 - 810/1512 = 2016 - 810/1512 = 1206/1512
After reducing the fraction, the answer is 67/84

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