Add 90/81 and 42/18
1st number: 1 9/81, 2nd number: 2 6/18
90/81 + 42/18 is 31/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
90/81 = 90 × 2/81 × 2 = 180/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
42/18 = 42 × 9/18 × 9 = 378/162 - Add the two like fractions:
180/162 + 378/162 = 180 + 378/162 = 558/162 - 558/162 simplified gives 31/9
- So, 90/81 + 42/18 = 31/9
In mixed form: 34/9
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