Question
$$13 = -4x-10$$
Answer
$$ x = -\dfrac{23}{4} $$
Explanation
$$ \begin{aligned} 13 &= -4x-10&& \text{ swap the left and right side of the equation } \\[1 em]-4x-10 &= 13&& \text{ move -10 to the right } \\[1 em]-4x &= 13+10&& \\[1 em]-4x &= 23&& \text{ divide both sides by $ -4 $ } \\[1 em]x &= -\frac{23}{4}&& \\[1 em] \end{aligned} $$
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