Subtract 70/63 from 28/12, Solve 2 4/12

Subtract 70/63 from 28/12

1^st number: 2 4/12, 2^nd number: 1 7/63

28/12 - 70/63 is 11/9.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
28/12 = 28 × 21/12 × 21 = 588/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
70/63 = 70 × 4/63 × 4 = 280/252
Subtract the two like fractions:
588/252 - 280/252 = 588 - 280/252 = 308/252
After reducing the fraction, the answer is 11/9
In mixed form: 12/9

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