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-8x+3.50=20
We move all terms to the left:
-8x+3.50-(20)=0
We add all the numbers together, and all the variables
-8x-16.5=0
We move all terms containing x to the left, all other terms to the right
-8x=16.5
x=16.5/-8
x=-2+0.5/8
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