Add 45/18 and 20/81
1st number: 2 9/18, 2nd number: 20/81
45/18 + 20/81 is 445/162.
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,
45/18 = 45 × 9/18 × 9 = 405/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Add the two like fractions:
405/162 + 40/162 = 405 + 40/162 = 445/162 - So, 45/18 + 20/81 = 445/162
In mixed form: 2121/162
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