Subtract 84/81 from 9/90
1st number: 9/90, 2nd number: 1 3/81
9/90 - 84/81 is -253/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
9/90 = 9 × 9/90 × 9 = 81/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
84/81 = 84 × 10/81 × 10 = 840/810 - Subtract the two like fractions:
81/810 - 840/810 = 81 - 840/810 = -759/810 - After reducing the fraction, the answer is -253/270
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