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3n+4=18+n
We simplify the equation to the form, which is simple to understand
3n+4=18+n
We move all terms containing n to the left and all other terms to the right.
+3n-1n=+18-4
We simplify left and right side of the equation.
+2n=+14
We divide both sides of the equation by 2 to get n.
n=7
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