Subtract 49/8 from 6/21, Solve 6/21

Subtract 49/8 from 6/21

1^st number: 6/21, 2^nd number: 6 1/8

6/21 - 49/8 is -327/56.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
6/21 = 6 × 8/21 × 8 = 48/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
49/8 = 49 × 21/8 × 21 = 1029/168
Subtract the two like fractions:
48/168 - 1029/168 = 48 - 1029/168 = -981/168
After reducing the fraction, the answer is -327/56

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