Subtract 70/9 from 84/81
1st number: 1 3/81, 2nd number: 7 7/9
84/81 - 70/9 is -182/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
84/81 = 84 × 1/81 × 1 = 84/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
70/9 = 70 × 9/9 × 9 = 630/81 - Subtract the two like fractions:
84/81 - 630/81 = 84 - 630/81 = -546/81 - After reducing the fraction, the answer is -182/27
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