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-15+1.5x=-4.5
We move all terms to the left:
-15+1.5x-(-4.5)=0
We add all the numbers together, and all the variables
1.5x-10.5=0
We move all terms containing x to the left, all other terms to the right
1.5x=10.5
x=10.5/1.5
x=7
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