Question
$$-56 = 5a-11$$
Answer
$$ a = -9 $$
Explanation
$$ \begin{aligned} -56 &= 5a-11&& \text{ swap the left and right side of the equation } \\[1 em]5a-11 &= -56&& \text{ move -11 to the right } \\[1 em]5a &= -56+11&& \\[1 em]5a &= -45&& \text{ divide both sides by $ 5 $ } \\[1 em]a &= -\frac{45}{5}&& \\[1 em]a &= -9&& \\[1 em] \end{aligned} $$
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