Respuesta :

Supernova

d(-3 + x) = kx + 9

  • Distribute d inside the parentheses.

-3d + dx = kx + 9

  • Subtract kx from both sides.

-3d + dx - kx = 9

  • Add 3d to both sides.

dx - kx = 9 + 3d

  • Factor x out of dx - kx.

x(d - k) = 9 + 3d

  • Divide both sides by d - k.

x = [tex] \frac{9+3d}{d-k} [/tex]

  • If you want to simplify this even more, factor 3 out of the numerator.

x = [tex] \frac{3(d + 3)}{d-k} [/tex]