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-4n+7+2n=8
We simplify the equation to the form, which is simple to understand
-4n+7+2n=8
We move all terms containing n to the left and all other terms to the right.
-4n+2n=+8-7
We simplify left and right side of the equation.
-2n=+1
We divide both sides of the equation by -2 to get n.
n=-0.5
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