Answer:
No. They do not have unique solution.
Step-by-step explanation:
2x+3y=9 (1)
-4x-6y=2 (2)
(1)*2, and (2)*1 , you have:
4x+6y=18 (1)
(1)+(2), you have:0=20 (wrong)
The equations do not have unique solution
