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8.2-4x=7
We move all terms to the left:
8.2-4x-(7)=0
We add all the numbers together, and all the variables
-4x+1.2=0
We move all terms containing x to the left, all other terms to the right
-4x=-1.2
x=-1.2/-4
x=1/3.3333333333333
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