Question

Calcule o valor de x no triângulo a seguir​

Answer 1

$\large \boxed{\begin{array}{l} \rm \: 4x + 3x + 2x = 180 \\ \\ \rm \: 9x = 180 \\ \\ \rm \: x = \dfrac{180}{9} \\ \\ \boxed{ \boxed{ \rm{x = 20 }}}\end{array}}$