Respuesta :

Answer:

[tex]f = \frac{ - 6g}{5} [/tex]

Step-by-step explanation:

6f + 9g = 3g + f

6f - f = 3g - 9g

5f = - 6g

[tex]f = \frac{ - 6g}{5} [/tex]

Answer:

B

Step-by-step explanation: