Respuesta :

marielongpre5

Answer:

f(a) = 1,5

Step-by-step explanation:

-3a + 6b = a + 4b

[+3a] [+3a]

6b = 3a + 4b

[-4b] [-4b]

2b = 3a

[÷2] [÷2]

b = 1,5a