Add 2/81 and 7/90
2/81 + 7/90 is 83/810.
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,
2/81 = 2 × 10/81 × 10 = 20/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
7/90 = 7 × 9/90 × 9 = 63/810 - Add the two like fractions:
20/810 + 63/810 = 20 + 63/810 = 83/810 - So, 2/81 + 7/90 = 83/810
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