Question

plz solve this very urgent​

Answer 1

Answer:

-2

Step-by-step explanation:

(2 -9z)/(17-4z) =4/5

10 -45z = 68 - 16z

68 -10 = -45z + 16z

58 = -29z

z = -2

Answer 2

Step-by-step explanation:

(2-9z)5=(17-4z)4

=10-45z=68-16z

=10-68=-16z+45z

=-58=29z

z=-58/29

z=-2