Question

3(5z – 7) – 2(9z – 11) = 4(8z – 13) – 17

Answer 1

Answer:

Z=2

Step-by-step explanation:

LHS:      3(5z - 7) - 2(9z - 11)

             =  15z - 21 - 18z + 22

             =   -3z + 1

RHS:      4(8z - 13) - 17

             = 32z - 52 - 17

             = 32z - 69

So the equation becomes :   -3z + 1 = 32z - 69

or                           69 + 1 = 32z + 3z  

or                               70 = 35z  

                              z = 2

Answer 2

Step-by-step explanation:

=> 3(5z - 7) - 2 (9z - 11) = 4(8z - 13) - 17

=> 15z - 21 -18z + 22 = 32z - 13 - 17

=> 15z - 18z -32z = 21 - 22 - 13 - 17

=> -35z =. -31

=>. z. = -31/-35

=> z. =. 31/35

Hope it helps you...!!!