Subtract 6/81 from 81/70
1st number: 1 11/70, 2nd number: 6/81
81/70 - 6/81 is 2047/1890.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
81/70 = 81 × 81/70 × 81 = 6561/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
6/81 = 6 × 70/81 × 70 = 420/5670 - Subtract the two like fractions:
6561/5670 - 420/5670 = 6561 - 420/5670 = 6141/5670 - After reducing the fraction, the answer is 2047/1890
- In mixed form: 1157/1890
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