Answer:
Y= 40
Step-by-step explanation:
I know the y equals 40 because I used

But for z and x I got stuck, so I hope I helped you a little to move forward with this problem.
YOU CAN DO THIS!!!!!
1. Ratio- 91:21
2. Reduce- the common factor is 7
3. Answer- 13:3
Y=2×2
y=4
4=-3x-1
now add 3x on both sides
3x+4= -1
now substract 4 on both sides
3x = -5
divide 3 on both side
x=-5/3
y= 4
x= -5/3