Add 70/18 and 20/81
1st number: 3 16/18, 2nd number: 20/81
70/18 + 20/81 is 335/81.
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,
70/18 = 70 × 9/18 × 9 = 630/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Add the two like fractions:
630/162 + 40/162 = 630 + 40/162 = 670/162 - 670/162 simplified gives 335/81
- So, 70/18 + 20/81 = 335/81
In mixed form: 411/81
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