Respuesta :

sqdancefan

Answer:

  15/2

Step-by-step explanation:

Subtract 5x from both sides of the equation to find out.

  5x +3x -5x = 5x +15/2 -5x . . . . . . subtract 5x

  3x = 15/2 . . . . . . . . . . . . . . . . . . . . collect terms

The required value of 3x is 15/2.