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2n+3=n+12
We simplify the equation to the form, which is simple to understand
2n+3=n+12
We move all terms containing n to the left and all other terms to the right.
+2n-1n=+12-3
We simplify left and right side of the equation.
+1n=+9
We divide both sides of the equation by 1 to get n.
n=9
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