Question

Tolong dong kerjain sama caranya besok harus di kumpulin

Answer 1

A. 50 + x + x = 180
   50 + 2x = 180
   2x = 180 - 50
   2x = 130
   x = 130/2
   x = 65

b. x + 5x + x = 180
   7x = 180
   x = 180/7
   x = 25,7

c. 3x + 60 + 2x = 180
   5x = 180-60
   x = 120/5
   x= 24

d. 90 + 3x + 4x = 180
    7x = 180 - 90
    x = 90/7
    x = 12, 86