$$ \begin{aligned} 10x-8+4x &= 5(x+2)&& \text{simplify left and right hand side} \\[1 em]14x-8 &= 5x+10&& \text{move the $ \color{blue}{ 5x } $ to the left side and $ \color{blue}{ -8 }$ to the right} \\[1 em]14x-5x &= 10+8&& \text{simplify left and right hand side} \\[1 em]9x &= 18&& \text{ divide both sides by $ 9 $ } \\[1 em]x &= \frac{18}{9}&& \\[1 em]x &= 2&& \\[1 em] \end{aligned} $$

This page was created using