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8-3.5x=-17.2
We move all terms to the left:
8-3.5x-(-17.2)=0
We add all the numbers together, and all the variables
-3.5x+25.2=0
We move all terms containing x to the left, all other terms to the right
-3.5x=-25.2
x=-25.2/-3.5
x=7+0.7/3.5
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