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(2x-13)+(2x+8)=180
We move all terms to the left:
(2x-13)+(2x+8)-(180)=0
We get rid of parentheses
2x+2x-13+8-180=0
We add all the numbers together, and all the variables
4x-185=0
We move all terms containing x to the left, all other terms to the right
4x=185
x=185/4
x=46+1/4
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