Answer:
15x+10z
Step-by-step explanation:
Distrubutive property gives us the power to make this much easier YEY!!!!
So,
5*3x = 15x (note you can not do this under normal curcimstances)
5*2z = 10z
15x+10z = your answer
your answer would be
Hope this helps! (:
..............
33689