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-9x-2.6=-8x
We move all terms to the left:
-9x-2.6-(-8x)=0
We get rid of parentheses
-9x+8x-2.6=0
We add all the numbers together, and all the variables
-1x-2.6=0
We move all terms containing x to the left, all other terms to the right
-x=2.6
x=2.6/-1
x=-2+0.6/1
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