Add 20/18 and 90/81
1st number: 1 2/18, 2nd number: 1 9/81
20/18 + 90/81 is 20/9.
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,
90/81 = 90 × 2/81 × 2 = 180/162 - Add the two like fractions:
180/162 + 180/162 = 180 + 180/162 = 360/162 - 360/162 simplified gives 20/9
- So, 20/18 + 90/81 = 20/9
In mixed form: 22/9
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