$$ \begin{aligned} 4(x-2) &= 3x&& \text{simplify left side} \\[1 em]4x-8 &= 3x&& \text{move the $ \color{blue}{ 3x } $ to the left side and $ \color{blue}{ -8 }$ to the right} \\[1 em]4x-3x &= 8&& \text{simplify left side} \\[1 em]x &= 8&& \\[1 em]x &= 8&& \\[1 em] \end{aligned} $$