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0.2n+9=(0.4n-1)
We simplify the equation to the form, which is simple to understand
0.2n+9=(0.4n-1)
Remove unnecessary parentheses
0.2n+9=0.4n-1
We move all terms containing n to the left and all other terms to the right.
+ 0.2n-0.4n=-1-9
We simplify left and right side of the equation.
-0.2n=-10
We divide both sides of the equation by -0.2 to get n.
n=50
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