$$5x\cdot4-50x\cdot2+125 = 0$$
Answer
$$ x = \frac{25}{16} $$
Explanation
$$ \begin{aligned} 5x\cdot4-50x\cdot2+125 &= 0&& \text{simplify left side} \\[1 em]20x-100x+125 &= 0&& \\[1 em]-80x+125 &= 0&& \text{ move the constants to the right } \\[1 em]-80x &= -125&& \text{ divide both sides by $ -80 $ } \\[1 em]x &= \frac{-125}{-80}&& \\[1 em]x &= \frac{25}{16}&& \\[1 em] \end{aligned} $$
This page was created using
Polynomial Equations Solver