Answer:
The system of three equations is equal to
[tex]x+y+z=155[/tex]
[tex]y=9x[/tex]
[tex]z=3y[/tex]
Step-by-step explanation:
Let
x ----> the number of cars rented during one month
y ----> the number of vans rented during one month
z ----> the number of trucks rented during one month
we know that
[tex]x+y+z=155[/tex] ----> equation A
[tex]y=9x[/tex] ---> equation B
[tex]z=3y[/tex] ----> equation C