Subtract 4/81 from 12/42
12/42 - 4/81 is 134/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
12/42 = 12 × 27/42 × 27 = 324/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
4/81 = 4 × 14/81 × 14 = 56/1134 - Subtract the two like fractions:
324/1134 - 56/1134 = 324 - 56/1134 = 268/1134 - After reducing the fraction, the answer is 134/567
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