Answer:Y=6
Explanation:
-x+3(2/3x)=9
Solve: 3(2/3x)=2x
-x+2x=9
Combine like terms: -x+2x=1x
1x=9
Divide the 1x by 1 and 9 by 1
1x/1=9/1
X=9
Plug in the X to any equation: 1st or 2nd equation
Your choice
Lets do the 2nd equation
Y=2/3x
Y=2/3(9)
2/3(9)=6
Y=6