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18=0.6x+30
We move all terms to the left:
18-(0.6x+30)=0
We get rid of parentheses
-0.6x-30+18=0
We add all the numbers together, and all the variables
-0.6x-12=0
We move all terms containing x to the left, all other terms to the right
-0.6x=12
x=12/-0.6
x=-20
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