Respuesta :
Answer: 10x+2y-20
Step-by-step explanation:
Combining like terms tells us that..
8x+2x=10x
6y-4y=2y and lastly
-9 - -11 = -20
Answer: 10x+2y-20
Step-by-step explanation:
Combining like terms tells us that..
8x+2x=10x
6y-4y=2y and lastly
-9 - -11 = -20