Question

PLZ HELP DUE SOON WORTH 100
SHOW ALL WORK TO GET BRAINLIEST

Answer 1

Answer:

x = 3, y=6

Step-by-step explanation:

Let's put 2x as y.

x + 2x = 9.

Simplify.

3x = 9.

x = 3

If x = 3, and y = 2x, then y = 2 (3) or 6.

Answer 2

Answer:

x = 3, y = 6

Step-by-step explanation:

y = 2x

x + y = 9

Solve these simultaneously

x + 2x = 9

3x = 9

x = 3

y = 2x

y = 2(3)

y = 6