80+2x=520

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Solution for 80+2x=520 equation: 



80+2x=520

We move all terms to the left:

80+2x-(520)=0

We add all the numbers together, and all the variables

2x-440=0

We move all terms containing x to the left, all other terms to the right

2x=440

x=440/2

x=220

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