Subtract 9/12 from 81/18
1st number: 4 9/18, 2nd number: 9/12
81/18 - 9/12 is 15/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
9/12 = 9 × 3/12 × 3 = 27/36 - Subtract the two like fractions:
162/36 - 27/36 = 162 - 27/36 = 135/36 - After reducing the fraction, the answer is 15/4
- In mixed form: 33/4
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