Question
$$-\frac{4}{22}-\frac{5}{22} = 0$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} -\frac{4}{22}-\frac{5}{22} &= 0&& \text{multiply ALL terms by } \color{blue}{ 22 }. \\[1 em]-22\cdot\frac{4}{22}-22\cdot\frac{5}{22} &= 22\cdot0&& \text{cancel out the denominators} \\[1 em]-4-5 &= 0&& \text{simplify left side} \\[1 em]-9 &= 0&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ -9 = 0 } $ is FALSE, we conclude that the equation has no solution.
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