Question

How do you do 4x+9=2x-6

Answer 1

Answer:

$x = \frac{-15}{2}$

Step-by-step explanation:

to answer these types of questions, we want to isolate the variable to one side of the equation

$4x + 9 = 2x - 6\\4x - 2x = -6 - 9\\2x = -15\\x = \frac{-15}{2}$

Answer 2

Answer:

x = -7.5 :)

Step-by-step explanation:

4x + 9 = 2x - 6

-2x         -2x

----------------------

  2x + 9 =  -6

        -9      -9

-----------------------

     2x = -15

     ---     ----

     2       2

x = -7.5