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7-5n+3=0
We simplify the equation to the form, which is simple to understand
7-5n+3=0
We move all terms containing n to the left and all other terms to the right.
-5n=0-7-3
We simplify left and right side of the equation.
-5n=-10
We divide both sides of the equation by -5 to get n.
n=2
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