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50=6x+7x+3
We move all terms to the left:
50-(6x+7x+3)=0
We add all the numbers together, and all the variables
-(13x+3)+50=0
We get rid of parentheses
-13x-3+50=0
We add all the numbers together, and all the variables
-13x+47=0
We move all terms containing x to the left, all other terms to the right
-13x=-47
x=-47/-13
x=3+8/13
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