Respuesta :

 -2*(-3*3)=16 simplifies to 2=0
( -2*(-3*3)=16 )
-2(bx - 5) = 16
bx - 5 = 16/-2
bx - 5 = -8
bx = -8+5
bx = -3
x = -3/b  ← in the first box

when b=3
x = -3/b
x = -3/3
x = -1   ← in the second box