Question

Rezolvaţi cît mai repede, e urgent.

Answer 1

(3x + 30°) + (50° + x) + (80° - 2x) = 180°

2x = 30°+50°+80°
2x = 180°-160°
2x = 20°
x = 20° : 2
x = 10

m<B = 60°
m<A = 60°
m<C = 60°

Answer 2

(3x+30) +(50+x) +(80-2x)= 180/-80
2x +30 +50=100/50
2x +30= 50/30
2x= 20/ ÷2
x=10
3x+ 30= 3×10+30= 60
50+x=60
80- 2x =60