Question

MIM AJUDEM PFVR!!!!!​

Answer 1

Resposta:

a)

$2x + 10^{o} + x = 90^{o}\\3x = 90^{o} - 10^{o} = 80^{o}\\x = \frac{80}{3} = 26,67^{o}$

b)

$2x - 10^{o} + x + 40^{o} = 90^{o}\\3x + 30^{o} = 90^{o}\\3x = 90^{o} - 30^{o} = 60^{o}\\x = \frac{60}{3} = 20^{o}$