Subtract 3/84 from 20/8, Solve 2 4/8

Subtract 3/84 from 20/8

1^st number: 2 4/8, 2^nd number: 3/84

20/8 - 3/84 is 69/28.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 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 84 × 2 = 168,
3/84 = 3 × 2/84 × 2 = 6/168
Subtract the two like fractions:
420/168 - 6/168 = 420 - 6/168 = 414/168
After reducing the fraction, the answer is 69/28
In mixed form: 213/28

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