Question

Tolong dibantu isi cara, trims kasih

Answer 1

(3x+45)+(5x+23)=180
3x+45+5x+23=180
8x=180–68
x=112:8=14
A=3×(x)+45
=3×14+45
=42+45=87
jdi jwbnya D

Answer 2

3x+45°+5x+23°=180°
8x+68°=180°
8x=180°-68°
8x=112°
x=112/8
x=14



Sudut A= 3x+ 45°
=3(14)+45°
=42+45
=87°