Question

mim ajudem a responder a essa fração

Answer 1

$a + b = 180^{0}\\\\\frac{x}{2} + \frac{x}{3} + \frac{x}{2} + 140^{0}=180^{0}\\\\\frac{2x}{2} + \frac{x}{3} =40^{0}\\\\x + \frac{x}{3} =40^{0}\\\\\frac{3x+x=120}{3} \\\\4x = 120\\\\x=\frac{120}{4}\\\\x = 30$