Question
$$\frac{3+6}{12} = 1\cdot7500$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} \frac{3+6}{12} &= 1\cdot7500&& \text{multiply ALL terms by } \color{blue}{ 12 }. \\[1 em]12 \cdot \frac{3+6}{12} &= 12\cdot1\cdot7500&& \text{cancel out the denominators} \\[1 em]9 &= 90000&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 9 = 90000 } $ is FALSE, we conclude that the equation has no solution.
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