Respuesta :

13a = 3b Hope this helps!!
thisisbenmanley
To simplify the equation, you need to put everything on one side and add the like terms.

4a + 3b = 6b - 9a

Put everything on the left side:

4a + 9a + 3b - 6b = 0

Then add like terms:

13a - 3b = 0