$$2^2-7x+10 = 10$$
Answer
$$ x = \frac{4}{7} $$
Explanation
$$ \begin{aligned} 2^2-7x+10 &= 10&& \text{simplify left side} \\[1 em]4-7x+10 &= 10&& \\[1 em]-7x+14 &= 10&& \text{ move 14 to the right } \\[1 em]-7x &= 10-14&& \\[1 em]-7x &= -4&& \text{ divide both sides by $ -7 $ } \\[1 em]x &= \frac{-4}{-7}&& \\[1 em]x &= \frac{4}{7}&& \\[1 em] \end{aligned} $$
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