Subtract 81/18 from 8/12
1st number: 8/12, 2nd number: 4 9/18
8/12 - 81/18 is -23/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
8/12 = 8 × 3/12 × 3 = 24/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Subtract the two like fractions:
24/36 - 162/36 = 24 - 162/36 = -138/36 - After reducing the fraction, the answer is -23/6
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