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-9x-2.8=-8x-2
We move all terms to the left:
-9x-2.8-(-8x-2)=0
We get rid of parentheses
-9x+8x+2-2.8=0
We add all the numbers together, and all the variables
-1x-0.8=0
We move all terms containing x to the left, all other terms to the right
-x=0.8
x=0.8/-1
x=-0.8/1
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