Respuesta :

remember that it should add up to 180

Answer:

x=25

Step-by-step explanation:

5x-5+2x+10=180

We move all terms to the left:

5x-5+2x+10-(180)=0

We add all the numbers together, and all the variables

7x-175=0

We move all terms containing x to the left, all other terms to the right

7x=175

x=175/7

x=25