Question

o valor da expressão x+y é igual a ?

Answer 1

$3x = 45\degree\\x = \frac{45\degree }{3}\\x = 15\degree \\\\3y - x = 45\degree \\3y - 15\degree = 45\degree \\3y = 45\degree + 15\degree \\3y = 60\degree \\y = \frac{60\degree }{3}\\y = 20\degree \\\\x+y = 15\degree + 20\degree = \boxed{35\degree}$