Question

Por favor ajudem, obg :3 ;-;

Answer 1

$Resolu\c{c}\~ao\to \left\{\begin{array}{ccc} \frac{2x}{3}+x+55 = 180 \\\\2x+3x+165 =540\\\\5x = 375\\\\\boxed{\boxed{x = 75^o}} \end{array}\right$

Espero ter ajudado. :))

Answer 2

 2x
-----  + x + 55 = 180
  3

2x + 3x + 165 = 540
-------------------------------
               3

5x + 165 = 540
5x = 540 - 165
5x = 375
x = 375/5
x = 75

substituindo 
 2x       2*75       150
------ = ---------- = --------- = 50
  3           3           3

 2x
------ = 50
  3

x + 55 = 75 + 55 = 130

 2x
------ = 50º
  3
x + 55 = 130º