Subtract 21/6 from 49/56, Solve 49/56

Subtract 21/6 from 49/56

1^st number: 49/56, 2^nd number: 3 3/6

49/56 - 21/6 is -21/8.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 6 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 56 × 3 = 168,
49/56 = 49 × 3/56 × 3 = 147/168
Likewise, for the 2nd fraction, since 6 × 28 = 168,
21/6 = 21 × 28/6 × 28 = 588/168
Subtract the two like fractions:
147/168 - 588/168 = 147 - 588/168 = -441/168
After reducing the fraction, the answer is -21/8

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