Add 18/81 and 36/90
18/81 + 36/90 is 28/45.
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,
36/90 = 36 × 9/90 × 9 = 324/810 - Add the two like fractions:
180/810 + 324/810 = 180 + 324/810 = 504/810 - 504/810 simplified gives 28/45
- So, 18/81 + 36/90 = 28/45
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