Respuesta :

360217

Answer:

x = 8

Step-by-step explanation:

Create the expression:

10(x + 10) = 9(9 + 11)

Do PEMDAS (Parenthesis):

10(x + 10) = 9(20)

Do PEMDAS (Multiplication):

10x + 100 = 180

Cancel out:

10x + 100 = 180

        -100   -100

10x = 80

Simpilfy:

x = 8