Subtract 81/9 from 40/12
1st number: 3 4/12, 2nd number: 9 0/9
40/12 - 81/9 is -17/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
40/12 = 40 × 3/12 × 3 = 120/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
81/9 = 81 × 4/9 × 4 = 324/36 - Subtract the two like fractions:
120/36 - 324/36 = 120 - 324/36 = -204/36 - After reducing the fraction, the answer is -17/3
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