Question

Calcule o valor de x no triângulo a seguir.

Answer 1

$\large\boxed{\begin{array}{l} \rm \: x + 2x + 75 {}^{ \circ} = 180 {}^{ \circ} \\ \\ \rm \: 3x = 180 {}^{ \circ} - 75 {}^{ \circ} \\ \\ \rm \: 3x = 105 {}^{ \circ} \\ \\ \rm \: x = \dfrac{105 {}^{ \circ} }{3} \\ \\ \boxed{ \boxed{ \rm{x = 35 {}^{ \circ} }}}\end{array}}$