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-2x=19.8
We move all terms to the left:
-2x-(19.8)=0
We add all the numbers together, and all the variables
-2x-19.8=0
We move all terms containing x to the left, all other terms to the right
-2x=19.8
x=19.8/-2
x=-9+1/1.1111111111111
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