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-6.4-6x=13.4
We move all terms to the left:
-6.4-6x-(13.4)=0
We add all the numbers together, and all the variables
-6x-19.8=0
We move all terms containing x to the left, all other terms to the right
-6x=19.8
x=19.8/-6
x=-3+1/3.33333333333
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