Respuesta :

13=3x-x/2 13=5x/2 26=5x X=5.2

Answer:

5.2

Step-by-step explanation:

13 + x/2 = 3x

13 = 3x - x/2              

13 = 5x/2

26 = 5x

x = 26/5

x = 5.2