Add 5/81 and 4/90
5/81 + 4/90 is 43/405.
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,
5/81 = 5 × 10/81 × 10 = 50/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
4/90 = 4 × 9/90 × 9 = 36/810 - Add the two like fractions:
50/810 + 36/810 = 50 + 36/810 = 86/810 - 86/810 simplified gives 43/405
- So, 5/81 + 4/90 = 43/405
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