Solve.

11x + 15 = 5x - 9

1 answer

To solve the equation 11x + 15 = 5x - 9, we want to isolate the variable x on one side of the equation.

First, let's subtract 5x from both sides:
11x + 15 - 5x = 5x - 9 - 5x

Simplifying, we get:
6x + 15 = -9

Next, let's subtract 15 from both sides:
6x + 15 - 15 = -9 - 15

Simplifying further, we get:
6x = -24

To isolate x, divide both sides by 6:
6x/6 = -24/6

Simplifying, we get:
x = -4

Therefore, the solution to the equation 11x + 15 = 5x - 9 is x = -4.