Verified answer

8) 2x+90 = 360

2x = 360-90

2x = 270

x = 270/2

x = 135°

9) x+10+3x-30 = 180

4x = 180-10+30

4x = 200

x = 200/4

x = 50°

Ângulo

A = x+10

A = 50+10

A = 60°

B = 3x-30

B = 3×50-30

B = 120°

❤️❤️ Prontinho

23/09/22