Subtract 21/7 from 8/24, Solve 8/24

Subtract 21/7 from 8/24

1^st number: 8/24, 2^nd number: 3 0/7

8/24 - 21/7 is -8/3.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 7 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 24 × 7 = 168,
8/24 = 8 × 7/24 × 7 = 56/168
Likewise, for the 2nd fraction, since 7 × 24 = 168,
21/7 = 21 × 24/7 × 24 = 504/168
Subtract the two like fractions:
56/168 - 504/168 = 56 - 504/168 = -448/168
After reducing the fraction, the answer is -8/3

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