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9(-4.3x+9.3)=315.9
We move all terms to the left:
9(-4.3x+9.3)-(315.9)=0
We add all the numbers together, and all the variables
9(-4.3x+9.3)-315.9=0
We multiply parentheses
-36x+83.7-315.9=0
We add all the numbers together, and all the variables
-36x-232.2=0
We move all terms containing x to the left, all other terms to the right
-36x=232.2
x=232.2/-36
x=-6+3.85714285714/8.57142857143
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