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-2.5x-15=4x
We move all terms to the left:
-2.5x-15-(4x)=0
We add all the numbers together, and all the variables
-6.5x-15=0
We move all terms containing x to the left, all other terms to the right
-6.5x=15
x=15/-6.5
x=-2+1/3.25
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