Subtract 18/6 from 81/12, Solve 6 9/12

Subtract 18/6 from 81/12

1^st number: 6 9/12, 2^nd number: 3 0/6

81/12 - 18/6 is 15/4.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 6 is 12

Next, find the equivalent fraction of both fractional numbers with denominator 12
For the 1st fraction, since 12 × 1 = 12,
81/12 = 81 × 1/12 × 1 = 81/12
Likewise, for the 2nd fraction, since 6 × 2 = 12,
18/6 = 18 × 2/6 × 2 = 36/12
Subtract the two like fractions:
81/12 - 36/12 = 81 - 36/12 = 45/12
After reducing the fraction, the answer is 15/4
In mixed form: 33/4

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