Subtract 50/8 from 8/21, Solve 8/21

Subtract 50/8 from 8/21

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

8/21 - 50/8 is -493/84.

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,
8/21 = 8 × 8/21 × 8 = 64/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
50/8 = 50 × 21/8 × 21 = 1050/168
Subtract the two like fractions:
64/168 - 1050/168 = 64 - 1050/168 = -986/168
After reducing the fraction, the answer is -493/84

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