Subtract 10/27 from 70/42, Solve 1 28/42

Subtract 10/27 from 70/42

1^st number: 1 28/42, 2^nd number: 10/27

70/42 - 10/27 is 35/27.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 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 27 × 14 = 378,
10/27 = 10 × 14/27 × 14 = 140/378
Subtract the two like fractions:
630/378 - 140/378 = 630 - 140/378 = 490/378
After reducing the fraction, the answer is 35/27
In mixed form: 18/27

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