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-4x-3.1=-9x+7.3
We move all terms to the left:
-4x-3.1-(-9x+7.3)=0
We get rid of parentheses
-4x+9x-7.3-3.1=0
We add all the numbers together, and all the variables
5x-10.4=0
We move all terms containing x to the left, all other terms to the right
5x=10.4
x=10.4/5
x=2+0.4/5
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