Add 50/90 and 20/81
50/90 + 20/81 is 65/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
50/90 = 50 × 9/90 × 9 = 450/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
20/81 = 20 × 10/81 × 10 = 200/810 - Add the two like fractions:
450/810 + 200/810 = 450 + 200/810 = 650/810 - 650/810 simplified gives 65/81
- So, 50/90 + 20/81 = 65/81
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