Subtract 1/10 from 90/81
1st number: 1 9/81, 2nd number: 1/10
90/81 - 1/10 is 91/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
90/81 = 90 × 10/81 × 10 = 900/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
1/10 = 1 × 81/10 × 81 = 81/810 - Subtract the two like fractions:
900/810 - 81/810 = 900 - 81/810 = 819/810 - After reducing the fraction, the answer is 91/90
- In mixed form: 11/90
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