Add 10/18 and 20/81
10/18 + 20/81 is 65/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
10/18 = 10 × 9/18 × 9 = 90/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Add the two like fractions:
90/162 + 40/162 = 90 + 40/162 = 130/162 - 130/162 simplified gives 65/81
- So, 10/18 + 20/81 = 65/81
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