Question
$$-2\cdot(1-7n) = 0$$
Answer
$$ n = \dfrac{1}{7} $$
Explanation
$$ \begin{aligned} -2\cdot(1-7n) &= 0&& \text{simplify left side} \\[1 em]-(2-14n) &= 0&& \\[1 em]-2+14n &= 0&& \\[1 em]14n-2 &= 0&& \text{ move the constants to the right } \\[1 em]14n &= 2&& \text{ divide both sides by $ 14 $ } \\[1 em]n &= \frac{2}{14}&& \\[1 em]n &= \frac{1}{7}&& \\[1 em] \end{aligned} $$
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