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(7x+2)+4x=180
We move all terms to the left:
(7x+2)+4x-(180)=0
We add all the numbers together, and all the variables
4x+(7x+2)-180=0
We get rid of parentheses
4x+7x+2-180=0
We add all the numbers together, and all the variables
11x-178=0
We move all terms containing x to the left, all other terms to the right
11x=178
x=178/11
x=16+2/11
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