Question

1. No triângulo, determine os valores de x e y
117​

Answer 1

Resposta:

$117 + y = 180 \\ y = 63$

$x + \frac{x}{2} + 63 = 180 \\ x + \frac{x}{2} = 117 \\ \frac{2x + x}{2} = 117 \\ 3x = 234 \\ x = \frac{234}{3} \\ x = 78$