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0.8-4=0.45x+4
We move all terms to the left:
0.8-4-(0.45x+4)=0
We add all the numbers together, and all the variables
-(0.45x+4)-3.2=0
We get rid of parentheses
-0.45x-4-3.2=0
We add all the numbers together, and all the variables
-0.45x-7.2=0
We move all terms containing x to the left, all other terms to the right
-0.45x=7.2
x=7.2/-0.45
x=-16
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