Respuesta :

x = 37 → C

the sum of the angles in a triangle = 180° hence

2x + 4 + x + 2x - 9 = 180 → ( simplify left side )

5x - 5 = 180 → ( add 5 to both sides )

5x = 185 → ( divide both sides by 5 )

x = [tex]\frac{185}{5}[/tex] = 37
2x-9+x+2x+4 =180
5x -5=180
Add 5 to both sides

5x =185
X= 37

Otras preguntas