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-2.6x+1.3=11.7
We move all terms to the left:
-2.6x+1.3-(11.7)=0
We add all the numbers together, and all the variables
-2.6x-10.4=0
We move all terms containing x to the left, all other terms to the right
-2.6x=10.4
x=10.4/-2.6
x=-4
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