Respuesta :

Answer:

The answer is 3

Step-by-step explanation:

0.6x = 0.3x + 0.48 + 0.42

0.6x = 0.3x + 0.9

0.6x - 0.3x= 0.9

0.3x = 0.9

x = 0.9/0.3

x=3