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3-(x-6)=17
We move all terms to the left:
3-(x-6)-(17)=0
We add all the numbers together, and all the variables
-(x-6)-14=0
We get rid of parentheses
-x+6-14=0
We add all the numbers together, and all the variables
-1x-8=0
We move all terms containing x to the left, all other terms to the right
-x=8
x=8/-1
x=-8