Question

(2 - 9z)/(17 - 4z) = 4/5​

Answer 1

Answer:

$\frac{2 - 9z}{17 - 4z} = \frac{4}{5} \\ 10 - 45z = 68 - 16z \\ 68 - 10 = - 45z + 16z \\ 58 = - 29z \\ z = \frac{58}{ - 29} \\ z = - 2$

Answer 2

Answer:

this is correct................