Subtract 4/12 from 45/81
45/81 - 4/12 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
45/81 = 45 × 4/81 × 4 = 180/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
4/12 = 4 × 27/12 × 27 = 108/324 - Subtract the two like fractions:
180/324 - 108/324 = 180 - 108/324 = 72/324 - After reducing the fraction, the answer is 2/9
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