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-4.5x-2.2=8.4
We move all terms to the left:
-4.5x-2.2-(8.4)=0
We add all the numbers together, and all the variables
-4.5x-10.6=0
We move all terms containing x to the left, all other terms to the right
-4.5x=10.6
x=10.6/-4.5
x=-2+1/2.8125
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