Subtract 18/84 from 5/2, Solve 2 1/2

Subtract 18/84 from 5/2

1^st number: 2 1/2, 2^nd number: 18/84

5/2 - 18/84 is 16/7.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 2 × 42 = 84,
5/2 = 5 × 42/2 × 42 = 210/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
18/84 = 18 × 1/84 × 1 = 18/84
Subtract the two like fractions:
210/84 - 18/84 = 210 - 18/84 = 192/84
After reducing the fraction, the answer is 16/7
In mixed form: 22/7

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