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3(-3x+4.3)=3.9
We move all terms to the left:
3(-3x+4.3)-(3.9)=0
We add all the numbers together, and all the variables
3(-3x+4.3)-3.9=0
We multiply parentheses
-9x+12.9-3.9=0
We add all the numbers together, and all the variables
-9x+9=0
We move all terms containing x to the left, all other terms to the right
-9x=-9
x=-9/-9
x=1
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