Add 90/81 and 70/90
1st number: 1 9/81, 2nd number: 70/90
90/81 + 70/90 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 90 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 90 × 9 = 810,
70/90 = 70 × 9/90 × 9 = 630/810 - Add the two like fractions:
900/810 + 630/810 = 900 + 630/810 = 1530/810 - 1530/810 simplified gives 17/9
- So, 90/81 + 70/90 = 17/9
In mixed form: 18/9
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