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Question
$$3\cdot7-4\cdot(-3+2) = 0$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 3\cdot7-4\cdot(-3+2) &= 0&& \text{simplify left side} \\[1 em]21-4\cdot(-1) &= 0&& \\[1 em]21+4 &= 0&& \\[1 em]25 &= 0&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 25 = 0 } $ is FALSE, we conclude that the equation has no solution.
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