Question
$$-30 = 5(x+1)$$
Answer
$$ x = -7 $$
Explanation
$$ \begin{aligned} -30 &= 5(x+1)&& \text{simplify right side} \\[1 em]-30 &= 5x+5&& \text{ swap the left and right side of the equation } \\[1 em]5x+5 &= -30&& \text{ move 5 to the right } \\[1 em]5x &= -30-5&& \\[1 em]5x &= -35&& \text{ divide both sides by $ 5 $ } \\[1 em]x &= -\frac{35}{5}&& \\[1 em]x &= -7&& \\[1 em] \end{aligned} $$
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