Respuesta :

obentachristopher

Answer:

6x + 20 + 4x + 80 - 2x=180

6x + 4x - 2x= 180 - 80 - 20

8x = 80

x = 10

siya90258

Answer:

(6x+20)+(4x)+(80-2x)=180°

6x+4x-2x+20+80=180°

8x+100=180°

8x=180°-100°

8x=80°

x=80/8

x=10

(6x+20)=(6×10+20)=80°

(4x)=(4×10)=40°

(80-2x)=(80-2×10)=60°