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-n-5=3n+(-7)
We simplify the equation to the form, which is simple to understand
-n-5=3n+(-7)
Remove unnecessary parentheses
-n-5=+3n-7
We move all terms containing n to the left and all other terms to the right.
-1n-3n=-7+5
We simplify left and right side of the equation.
-4n=-2
We divide both sides of the equation by -4 to get n.
n=0.5
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