3x+6x=18

Thanx!

9x = 18

Divide both sides of the equation by 9.
That will tell you the value of x.

x=2

To solve the equation 3x + 6x = 18, you need to combine like terms and then solve for x.

First, combine the x terms by adding the coefficients:
3x + 6x = 18
(3 + 6)x = 18
9x = 18

Next, isolate x by dividing both sides of the equation by 9:
(9x)/9 = 18/9
x = 2

So, the solution to the equation is x = 2.