Add 18/81 and 12/90
18/81 + 12/90 is 16/45.
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,
18/81 = 18 × 10/81 × 10 = 180/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
12/90 = 12 × 9/90 × 9 = 108/810 - Add the two like fractions:
180/810 + 108/810 = 180 + 108/810 = 288/810 - 288/810 simplified gives 16/45
- So, 18/81 + 12/90 = 16/45
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