Subtract 8/81 from 70/9
1st number: 7 7/9, 2nd number: 8/81
70/9 - 8/81 is 622/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
70/9 = 70 × 9/9 × 9 = 630/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
8/81 = 8 × 1/81 × 1 = 8/81 - Subtract the two like fractions:
630/81 - 8/81 = 630 - 8/81 = 622/81 - In mixed form: 755/81
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