Subtract 84/81 from 40/60
1st number: 40/60, 2nd number: 1 3/81
40/60 - 84/81 is -10/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
40/60 = 40 × 27/60 × 27 = 1080/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
84/81 = 84 × 20/81 × 20 = 1680/1620 - Subtract the two like fractions:
1080/1620 - 1680/1620 = 1080 - 1680/1620 = -600/1620 - After reducing the fraction, the answer is -10/27
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Related: 80/60-84/81