Subtract 20/21 from 25/24, Solve 1 1/24

Subtract 20/21 from 25/24

1^st number: 1 1/24, 2^nd number: 20/21

25/24 - 20/21 is 5/56.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 24 × 7 = 168,
25/24 = 25 × 7/24 × 7 = 175/168
Likewise, for the 2nd fraction, since 21 × 8 = 168,
20/21 = 20 × 8/21 × 8 = 160/168
Subtract the two like fractions:
175/168 - 160/168 = 175 - 160/168 = 15/168
After reducing the fraction, the answer is 5/56

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