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(2x+30)+(5x-54)=180
We move all terms to the left:
(2x+30)+(5x-54)-(180)=0
We get rid of parentheses
2x+5x+30-54-180=0
We add all the numbers together, and all the variables
7x-204=0
We move all terms containing x to the left, all other terms to the right
7x=204
x=204/7
x=29+1/7
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