Respuesta :

Answer:

r= [tex]\frac{-23}{2\\}[/tex]

Step-by-step explanation:

Answer: r= -11.5

Step-by-step explanation:

Combine like terms

-1 -2r -11 = 11

-12-2r = 11

Add 12 to both sides

-2r=23

Divide by -2 on both sides

r= -11.5

Hope this helps!