Question
$$\frac{1}{9}+\frac{411}{12} = 0$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} \frac{1}{9}+\frac{411}{12} &= 0&& \text{multiply ALL terms by } \color{blue}{ 36 }. \\[1 em]36\cdot\frac{1}{9}+36\cdot\frac{411}{12} &= 36\cdot0&& \text{cancel out the denominators} \\[1 em]4+1233 &= 0&& \text{simplify left side} \\[1 em]1237 &= 0&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 1237 = 0 } $ is FALSE, we conclude that the equation has no solution.
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