Add 1/81 and 1/90
1/81 + 1/90 is 19/810.
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,
1/81 = 1 × 10/81 × 10 = 10/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
1/90 = 1 × 9/90 × 9 = 9/810 - Add the two like fractions:
10/810 + 9/810 = 10 + 9/810 = 19/810 - So, 1/81 + 1/90 = 19/810
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