aprinacheba aprinacheba
  • 13-03-2017
  • Mathematics
contestada

Solve for z: 23 – 3z = –4
a. z = 9
b.
c. z = –24
d. z = 81

Respuesta :

zaqwsx
zaqwsx zaqwsx
  • 13-03-2017
the correct answer is A. z=9
Answer Link
brookskinner brookskinner
  • 13-03-2017
23 - 3z = -4
+4           +4
-----------------
27 - 3z = 0
     +3z    +3z
------------------
27= 3z
/ 3     /3
-----------
z = 9
Answer Link

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