$$ \begin{aligned} 425052x\cdot3+10368x\cdot2-4464x-280 &= 0&& \text{simplify left side} \\[1 em]1275156x+20736x-4464x-280 &= 0&& \\[1 em]1291428x-280 &= 0&& \text{ move the constants to the right } \\[1 em]1291428x &= 280&& \text{ divide both sides by $ 1291428 $ } \\[1 em]x &= \frac{280}{1291428}&& \\[1 em]x &= \frac{70}{322857}&& \\[1 em] \end{aligned} $$

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