Respuesta :

13) 2x + 5 = 2x + 11   ⇒  the 2x cancels out on both sides leaving 5 = 11 which is a false statement so there is no solution that will make it a true statement.

14) -11k + 14 = -11k - 25  ⇒ same as above.  the -11k cancels out leaving 14 = -25

#13 is the first one and #14 is the last, if need to explain, reply back plz