30-2x=80

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Solution for 30-2x=80 equation: 



30-2x=80

We move all terms to the left:

30-2x-(80)=0

We add all the numbers together, and all the variables

-2x-50=0

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

-2x=50

x=50/-2

x=-25

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