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-0.5-(3x+9)-12=16
We move all terms to the left:
-0.5-(3x+9)-12-(16)=0
We add all the numbers together, and all the variables
-(3x+9)-28.5=0
We get rid of parentheses
-3x-9-28.5=0
We add all the numbers together, and all the variables
-3x-37.5=0
We move all terms containing x to the left, all other terms to the right
-3x=37.5
x=37.5/-3
x=-12+1/2
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