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45/4=-2n+9/2n
We simplify the equation to the form, which is simple to understand
45/4=-2n+9/2n
We move all terms containing n to the left and all other terms to the right.
+2n-2n=-11.25
We simplify left and right side of the equation.
n=-11.25
0=-011.25
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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