Subtract 27/21 from 25/2, Solve 12 1/2

Subtract 27/21 from 25/2

1^st number: 12 1/2, 2^nd number: 1 6/21

25/2 - 27/21 is 157/14.

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,
25/2 = 25 × 21/2 × 21 = 525/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
27/21 = 27 × 2/21 × 2 = 54/42
Subtract the two like fractions:
525/42 - 54/42 = 525 - 54/42 = 471/42
After reducing the fraction, the answer is 157/14
In mixed form: 113/14

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