90=-2(5n-5)

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Solution for 90=-2(5n-5) equation:


90=-2(5n-5)

We simplify the equation to the form, which is simple to understand 
90=-2(5n-5)

Reorder the terms in parentheses
90=+(-10n+10)

Remove unnecessary parentheses
+90=-10n+10

We move all terms containing n to the left and all other terms to the right. 
+10n=+10-90

We simplify left and right side of the equation. 
+10n=-80

We divide both sides of the equation by 010 to get n. 
n=-8

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