Question
$$17\cdot30 = 20x$$
Answer
$$ x = \dfrac{51}{2} $$
Explanation
$$ \begin{aligned} 17\cdot30 &= 20x&& \text{move the $ \color{blue}{ 20x } $ to the left side} \\[1 em]510-20x &= 0&& \text{ move the constants to the right } \\[1 em]-20x &= -510&& \text{ divide both sides by $ -20 $ } \\[1 em]x &= \frac{-510}{-20}&& \\[1 em]x &= \frac{51}{2}&& \\[1 em] \end{aligned} $$
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