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-7x-2.8=6x=13.2
We move all terms to the left:
-7x-2.8-(6x)=0
We add all the numbers together, and all the variables
-13x-2.8=0
We move all terms containing x to the left, all other terms to the right
-13x=2.8
x=2.8/-13
x=-2.8/13
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