Subtract 27/21 from 5/2, Solve 2 1/2

Subtract 27/21 from 5/2

1^st number: 2 1/2, 2^nd number: 1 6/21

5/2 - 27/21 is 17/14.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 2 × 21 = 42,
5/2 = 5 × 21/2 × 21 = 105/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
27/21 = 27 × 2/21 × 2 = 54/42
Subtract the two like fractions:
105/42 - 54/42 = 105 - 54/42 = 51/42
After reducing the fraction, the answer is 17/14
In mixed form: 13/14

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