Subtract 81/27 from 20/12
1st number: 1 8/12, 2nd number: 3 0/27
20/12 - 81/27 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
20/12 = 20 × 9/12 × 9 = 180/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
81/27 = 81 × 4/27 × 4 = 324/108 - Subtract the two like fractions:
180/108 - 324/108 = 180 - 324/108 = -144/108 - After reducing the fraction, the answer is -4/3
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