80-2x=84

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Solution for 80-2x=84 equation: 



80-2x=84

We move all terms to the left:

80-2x-(84)=0

We add all the numbers together, and all the variables

-2x-4=0

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

-2x=4

x=4/-2

x=-2

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