Respuesta :

Answer:

-1

Step-by-step explanation:

15x-8x-2=-9

Or, 7x=-9+2

Or, 7x=-7

Or, x=-7/7

Or, x =-1

15x-2(4x+1)=-9
15x-8x-2=-9
7x-2=-9
7x=-7
X=-1