$$ \begin{aligned} 6(4x+5)+3 &= 2(10x-1)&& \text{simplify left and right hand side} \\[1 em]24x+30+3 &= 20x-2&& \\[1 em]24x+33 &= 20x-2&& \text{move the $ \color{blue}{ 20x } $ to the left side and $ \color{blue}{ 33 }$ to the right} \\[1 em]24x-20x &= -2-33&& \text{simplify left and right hand side} \\[1 em]4x &= -35&& \text{ divide both sides by $ 4 $ } \\[1 em]x &= -\frac{35}{4}&& \\[1 em] \end{aligned} $$

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