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2(-5-7n)+3n=-87
We simplify the equation to the form, which is simple to understand
2(-5-7n)+3n=-87
Reorder the terms in parentheses
+(-10-14n)+3n=-87
Remove unnecessary parentheses
-10-14n+3n=-87
We move all terms containing n to the left and all other terms to the right.
-14n+3n=-87+10
We simplify left and right side of the equation.
-11n=-77
We divide both sides of the equation by -11 to get n.
n=7
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