Respuesta :

(4x + 20) + (x - 10) = 180
4x + 20 + x - 10 = 180
5x + 20 - 10 = 180
5x + 10 = 180
5x = 170
x = 34
AOMTH
4x+20+x-10=180
5x+10=180
5x=180-10
5x=170
x=34

ask me if you have a question :D