Question

F(x)=2/3x+3 find the value of x, such that f(x)=-15

Answer 1

`x=-27`

Explanation:

`f(x)=(2)/(3) x+3`

Substitute -15 for
`f(x)`:

`-15=(2)/(3) x+3`

Subtract
`3` from both sides of the equation:

`-18=(2)/(3) x`

Rewrite the equation:

`-(18)/(1) =(2)/(3) x`

Find the cross product:

`-54=2x`

Divide by the coefficient of
`x`, which is
`2`:

`-27=x`

I'm going to flip the equation so my variable is on the left:

`x=-27`