Subtract 18/80 from 20/8, Solve 2 4/8

Subtract 18/80 from 20/8

1^st number: 2 4/8, 2^nd number: 18/80

20/8 - 18/80 is 91/40.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 8 × 10 = 80,
20/8 = 20 × 10/8 × 10 = 200/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80
Subtract the two like fractions:
200/80 - 18/80 = 200 - 18/80 = 182/80
After reducing the fraction, the answer is 91/40
In mixed form: 211/40

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