Question
$$3 = x+3-5x$$
Answer
$$ x = 0 $$
Explanation
$$ \begin{aligned} 3 &= x+3-5x&& \text{simplify right side} \\[1 em]3 &= -4x+3&& \text{ swap the left and right side of the equation } \\[1 em]-4x+3 &= 3&& \text{ move 3 to the right } \\[1 em]-4x &= 3-3&& \\[1 em]-4x &= 0&& \text{ divide both sides by $ -4 $ } \\[1 em]x &= \frac{0}{-4}&& \\[1 em]x &= 0&& \\[1 em] \end{aligned} $$
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