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9.8-2.2x=12
We move all terms to the left:
9.8-2.2x-(12)=0
We add all the numbers together, and all the variables
-2.2x-2.2=0
We move all terms containing x to the left, all other terms to the right
-2.2x=2.2
x=2.2/-2.2
x=-1
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