Respuesta :

1 + 8x = -16 - 2x - 7x (try to combine like terms)

1 + 8x = -16 - 9x (add 16 on both sides, then subtract 8x on both sides to get x on one side of the equation)

17 = -17x (divide -17 on both sides to get x by itself)

-1 = x