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80-x=30+2x
We move all terms to the left:
80-x-(30+2x)=0
We add all the numbers together, and all the variables
-x-(2x+30)+80=0
We add all the numbers together, and all the variables
-1x-(2x+30)+80=0
We get rid of parentheses
-1x-2x-30+80=0
We add all the numbers together, and all the variables
-3x+50=0
We move all terms containing x to the left, all other terms to the right
-3x=-50
x=-50/-3
x=16+2/3
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