Question
$$5x-12 = 2x+9$$
Answer
$$ x = 7 $$
Explanation
$$ \begin{aligned} 5x-12 &= 2x+9&& \text{move the $ \color{blue}{ 2x } $ to the left side and $ \color{blue}{ -12 }$ to the right} \\[1 em]5x-2x &= 9+12&& \text{simplify left and right hand side} \\[1 em]3x &= 21&& \text{ divide both sides by $ 3 $ } \\[1 em]x &= \frac{21}{3}&& \\[1 em]x &= 7&& \\[1 em] \end{aligned} $$
This page was created using
Equations Solver