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3(3n+2)+3n=28.5
We move all terms to the left:
3(3n+2)+3n-(28.5)=0
We add all the numbers together, and all the variables
3n+3(3n+2)-28.5=0
We multiply parentheses
3n+9n+6-28.5=0
We add all the numbers together, and all the variables
12n-22.5=0
We move all terms containing n to the left, all other terms to the right
12n=22.5
n=22.5/12
n=1+4.2/4.8
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