5x+12=

x+9

1 answer

To solve this equation, we need to isolate the variable "x" on one side of the equal sign.

We can start by subtracting "x" from both sides of the equation, and then subtracting "9" from both sides, like this:

5x + 12 - x - 9 = 0

Combining like terms on both sides, we get:

4x + 3 = 0

Now we can isolate "x" by subtracting 3 from both sides and then dividing by 4:

4x = -3

x = -3/4

So the solution is x = -0.75.