Answer:
[tex]2x + 15 = \frac{x}{2} - 3[/tex]
Move the variable
[tex]4x + 30 = x - 6[/tex]
[tex]4x - x + 30 = - 6[/tex]
Collect like terms
[tex]4x - x = - 6 - 30[/tex]
[tex]3x = - 6 - 30[/tex]
[tex]3x = - 36[/tex]
Divide both sides by three
[tex]x = - 12[/tex]