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n-7+3n=1
We simplify the equation to the form, which is simple to understand
n-7+3n=1
We move all terms containing n to the left and all other terms to the right.
+1n+3n=+1+7
We simplify left and right side of the equation.
+4n=+8
We divide both sides of the equation by 4 to get n.
n=2
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