Subtract 56/21 from 1/8, Solve 1/8 - 2 14/21 as a fraction

Subtract 56/21 from 1/8

1^st number: 1/8, 2^nd number: 2 14/21

1/8 - 56/21 is -61/24.

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

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 8 × 21 = 168,
1/8 = 1 × 21/8 × 21 = 21/168
Likewise, for the 2nd fraction, since 21 × 8 = 168,
56/21 = 56 × 8/21 × 8 = 448/168
Subtract the two like fractions:
21/168 - 448/168 = 21 - 448/168 = -427/168
After reducing the fraction, the answer is -61/24

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