Subtract 70/81 from 84/40
1st number: 2 4/40, 2nd number: 70/81
84/40 - 70/81 is 1001/810.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
84/40 = 84 × 81/40 × 81 = 6804/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
70/81 = 70 × 40/81 × 40 = 2800/3240 - Subtract the two like fractions:
6804/3240 - 2800/3240 = 6804 - 2800/3240 = 4004/3240 - After reducing the fraction, the answer is 1001/810
- In mixed form: 1191/810
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Related: 84/80-70/81