Subtract 60/54 from 60/42, Solve 1 18/42

Subtract 60/54 from 60/42

1^st number: 1 18/42, 2^nd number: 1 6/54

60/42 - 60/54 is 20/63.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
60/42 = 60 × 9/42 × 9 = 540/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
60/54 = 60 × 7/54 × 7 = 420/378
Subtract the two like fractions:
540/378 - 420/378 = 540 - 420/378 = 120/378
After reducing the fraction, the answer is 20/63

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