Respuesta :

Answer:

b=4/3

Explanation:

12b-4=9b

12b-9b=4

3b=4

b=4/3
The answer is: b= 4/3

Explanation:

12b - 4 = 9b
-9b -9b
3b - 4 = 0
+4 +4
3b = 4
— —
3 3

b=4/3