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45=2.50x
We move all terms to the left:
45-(2.50x)=0
We add all the numbers together, and all the variables
-(+2.50x)+45=0
We get rid of parentheses
-2.50x+45=0
We add all the numbers together, and all the variables
-2.5x+45=0
We move all terms containing x to the left, all other terms to the right
-2.5x=-45
x=-45/-2.5
x=+18
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