Question
$$-33 = 6b-15$$
Answer
$$ b = -3 $$
Explanation
$$ \begin{aligned} -33 &= 6b-15&& \text{ swap the left and right side of the equation } \\[1 em]6b-15 &= -33&& \text{ move -15 to the right } \\[1 em]6b &= -33+15&& \\[1 em]6b &= -18&& \text{ divide both sides by $ 6 $ } \\[1 em]b &= -\frac{18}{6}&& \\[1 em]b &= -3&& \\[1 em] \end{aligned} $$
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