Subtract 54/56 from 56/21, Solve 2 14/21

Subtract 54/56 from 56/21

1^st number: 2 14/21, 2^nd number: 54/56

56/21 - 54/56 is 143/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
56/21 = 56 × 8/21 × 8 = 448/168
Likewise, for the 2nd fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168
Subtract the two like fractions:
448/168 - 162/168 = 448 - 162/168 = 286/168
After reducing the fraction, the answer is 143/84
In mixed form: 159/84

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