Subtract 12/9 from 81/18
1st number: 4 9/18, 2nd number: 1 3/9
81/18 - 12/9 is 19/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
81/18 = 81 × 1/18 × 1 = 81/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
12/9 = 12 × 2/9 × 2 = 24/18 - Subtract the two like fractions:
81/18 - 24/18 = 81 - 24/18 = 57/18 - After reducing the fraction, the answer is 19/6
- In mixed form: 31/6
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