Add 20/18 and 18/81
1st number: 1 2/18, 2nd number: 18/81
20/18 + 18/81 is 4/3.
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,
20/18 = 20 × 9/18 × 9 = 180/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
18/81 = 18 × 2/81 × 2 = 36/162 - Add the two like fractions:
180/162 + 36/162 = 180 + 36/162 = 216/162 - 216/162 simplified gives 4/3
- So, 20/18 + 18/81 = 4/3
In mixed form: 11/3
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