Subtract 3/12 from 81/2, Solve 40 1/2

Subtract 3/12 from 81/2

1^st number: 40 1/2, 2^nd number: 3/12

81/2 - 3/12 is 161/4.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12

Next, find the equivalent fraction of both fractional numbers with denominator 12
For the 1st fraction, since 2 × 6 = 12,
81/2 = 81 × 6/2 × 6 = 486/12
Likewise, for the 2nd fraction, since 12 × 1 = 12,
3/12 = 3 × 1/12 × 1 = 3/12
Subtract the two like fractions:
486/12 - 3/12 = 486 - 3/12 = 483/12
After reducing the fraction, the answer is 161/4
In mixed form: 401/4

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