Subtract 70/81 from 18/12
1st number: 1 6/12, 2nd number: 70/81
18/12 - 70/81 is 103/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
18/12 = 18 × 27/12 × 27 = 486/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
70/81 = 70 × 4/81 × 4 = 280/324 - Subtract the two like fractions:
486/324 - 280/324 = 486 - 280/324 = 206/324 - After reducing the fraction, the answer is 103/162
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