Subtract 10/54 from 70/42, Solve 1 28/42

Subtract 10/54 from 70/42

1^st number: 1 28/42, 2^nd number: 10/54

70/42 - 10/54 is 40/27.

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,
70/42 = 70 × 9/42 × 9 = 630/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
10/54 = 10 × 7/54 × 7 = 70/378
Subtract the two like fractions:
630/378 - 70/378 = 630 - 70/378 = 560/378
After reducing the fraction, the answer is 40/27
In mixed form: 113/27

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