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12-4=0.5x
We move all terms to the left:
12-4-(0.5x)=0
We add all the numbers together, and all the variables
-(+0.5x)+12-4=0
We add all the numbers together, and all the variables
-(+0.5x)+8=0
We get rid of parentheses
-0.5x+8=0
We move all terms containing x to the left, all other terms to the right
-0.5x=-8
x=-8/-0.5
x=+16
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