3x + (8x+15) = 180 find they value of x

x=15

Step-by-step explanation:

First, distribute into the parenthesis by 1 to get rid of the parenthesis.

The 1 is also called an "invisible one" to distribute into parenthesis.

3x+8x+15 = 180

Now, add the common variables.

11x+15 = 180

Subtract to both sides by 15.

11x+15 = 180

-15 - 15

Now divide both sides by 11 to isolate the variable.

11x = 165

11 11

x = 15