Subtract 24/42 from 20/8, Solve 2 4/8

Subtract 24/42 from 20/8

1^st number: 2 4/8, 2^nd number: 24/42

20/8 - 24/42 is 27/14.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 8 × 21 = 168,
20/8 = 20 × 21/8 × 21 = 420/168
Likewise, for the 2nd fraction, since 42 × 4 = 168,
24/42 = 24 × 4/42 × 4 = 96/168
Subtract the two like fractions:
420/168 - 96/168 = 420 - 96/168 = 324/168
After reducing the fraction, the answer is 27/14
In mixed form: 113/14

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