$$29(x\cdot5+70) = 29(x\cdot2+34)$$

$$ \begin{aligned} 29(x\cdot5+70) &= 29(x\cdot2+34)&& \text{simplify left and right hand side} \\[1 em]145x+2030 &= 58x+986&& \text{move the $ \color{blue}{ 58x } $ to the left side and $ \color{blue}{ 2030 }$ to the right} \\[1 em]145x-58x &= 986-2030&& \text{simplify left and right hand side} \\[1 em]87x &= -1044&& \text{ divide both sides by $ 87 $ } \\[1 em]x &= -\frac{1044}{87}&& \\[1 em]x &= -12&& \\[1 em] \end{aligned} $$

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