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2n+5=90
We simplify the equation to the form, which is simple to understand
2n+5=90
We move all terms containing n to the left and all other terms to the right.
+2n=+90-5
We simplify left and right side of the equation.
+2n=+85
We divide both sides of the equation by 2 to get n.
n=42.5
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