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-87=n-3(-5n-3)
We simplify the equation to the form, which is simple to understand
-87=n-3(-5n-3)
Reorder the terms in parentheses
-87=n+(+15n+9)
Remove unnecessary parentheses
-87=+n+15n+9
We move all terms containing n to the left and all other terms to the right.
-1n-15n=+9+87
We simplify left and right side of the equation.
-16n=+96
We divide both sides of the equation by -16 to get n.
n=-6
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