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-2.5x=x+7.5
We move all terms to the left:
-2.5x-(x+7.5)=0
We get rid of parentheses
-2.5x-x-7.5=0
We add all the numbers together, and all the variables
-3.5x-7.5=0
We move all terms containing x to the left, all other terms to the right
-3.5x=7.5
x=7.5/-3.5
x=-2+0.5/3.5
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