pls it's urget solve it fast pls pls

Answer:
15
Step-by-step explanation:
2x+3y=5
6x+9y=k
Multiply the top equation by 3:
6x+9y=15
Since the left side of both equations is 6x+9y, k must be 15. k and y can now have infinite solutions, since the top and bottom equations are the same. Hope this helps!