What is 2n-n-4+7n i need help

8n-4

Step-by-step explanation:

combine like terms

:)

8 −4

That should be your answer unless you need to do it in simplest form then this should be your answer

(2- 1 + 7 )n - 4 = 8n-4

or 4( 2n-1 )

I hopes this helps

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)