To solve 8n - 10 = 6 - 2n, first add 2n to each side of the equation. This will give you 10n - 10 = 6. Next, add 10 to each side to get 10n = 16. Now divide each side by 10 to get n = 16/10. Simplify the fraction and the answer is n = 8/5.
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2n - 12
8n+6
Un = 2n - 8 Un = 2n - 8 Un = 2n - 8 Un = 2n - 8
It is: 2n^2 -5n -42 equals (2n+7)(n-6) when factored
perimeter equals 2 times width plus 2 times length so, perimeter equals 2(3n+2)+2(n-1) = 6n+6+2n-2 = 8n+4.