Respuesta :

amna04352

Answer:

(3,15)

Step-by-step explanation:

y = 5x

x + y = 18

x + 5x = 18

6x = 18

x = 3

y = 5(3) = 15

igoroleshko156

Step-by-step explanation:

Step 1:  Set y to 5x in the first equation

[tex]x + y = 18[/tex]

[tex]x + (5x) = 18[/tex]

[tex]6x = 18[/tex]

[tex]6x / 6 = 18 / 6[/tex]

[tex]x = 3[/tex]

Step 2:  Set x to 3 in the second equation

[tex]y = 5x[/tex]

[tex]y = 5(3)[/tex]

[tex]y = 15[/tex]

Answer:  [tex](3, 15)[/tex]