Question

Tolong yaa^^ nomor 2&3 poinnya byk lho..

Answer 1

2) 5x+x = 90
     6x = 90
       x =15
   y+2x = 90
   y+2.15 = 90
   y+30 = 90
   y = 90-30
   y = 60

3) x+40 = 90
     x = 90-40
     x = 50
   2y+y = 90
     3y = 90
       y = 30

semoga membantu ya :)

Answer 2

2) 5x+x=90--------6x=90..........x=90/6.........x=15,
   y+2y=90.......3y=90.....y=90/3.....y=30,,,,,,,y=180-(90+2x)...y=180-(90+30),,y=180-120,,,,,y=60


3)x=90-40=50,,,,,,2y+y=90......3y=90......y=90/3.....y=30