Subtract 72/56 from 28/12, Solve 2 4/12

Subtract 72/56 from 28/12

1^st number: 2 4/12, 2^nd number: 1 16/56

28/12 - 72/56 is 22/21.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 12 × 14 = 168,
28/12 = 28 × 14/12 × 14 = 392/168
Likewise, for the 2nd fraction, since 56 × 3 = 168,
72/56 = 72 × 3/56 × 3 = 216/168
Subtract the two like fractions:
392/168 - 216/168 = 392 - 216/168 = 176/168
After reducing the fraction, the answer is 22/21
In mixed form: 11/21

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