Question

What is the value of x? (Hint, you can assume straight lines)

Answer 1

You didn't even write down the problem that we need to solve?

Answer 2

Since the two angles are supplementary, they add up to 180. So the equation would be
`3(2x-6)+4x+9=180`

And distribute:

`6x-18+4x+9=180`

Then combine like terms:

`10x-9=180`

`10x=189`

And solve for x:

`x=18.9`

So x=18.9