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-8x-4.2=111
We move all terms to the left:
-8x-4.2-(111)=0
We add all the numbers together, and all the variables
-8x-115.2=0
We move all terms containing x to the left, all other terms to the right
-8x=115.2
x=115.2/-8
x=-14+2.6666666666667/6.6666666666667
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