Respuesta :

3r + 6 = 2r + 9
-6 on both sides
3r = 2r + 3
-2r on both sides
r = 3

Answer:
r = 3

Answer:

r = 3

Step-by-step explanation:

subtract six from both sides

3r = 2r + 3

subtract 2r from both sides

r=3