Question

please answer correctly, will mark brainliest

worth 30pts

Answer 1

Answer:

(3,15)

Step-by-step explanation:

y = 5x

x + y = 18

x + 5x = 18

6x = 18

x = 3

y = 5(3) = 15

Answer 2

Step-by-step explanation:

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

$x + y = 18$

$x + (5x) = 18$

$6x = 18$

$6x / 6 = 18 / 6$

$x = 3$

Step 2:  Set x to 3 in the second equation

$y = 5x$

$y = 5(3)$

$y = 15$

Answer:  $(3, 15)$