Z/3=25
z=75 is the answer to this problem
17. 4n-8=5
8+5=13
13/4=3.25
n=3.25
18. n/2+ 5=15
15-5=10
10*2=20
n=20
19. 5v-42=73
73+42=115
115/5=23
v=23
20. 3d-13=11
11+13=24
24/3=8
d=8
Hope I helped☺☺
60 miles per hour and 55 miles per hour it will be 240 miles over 4 hours because if you divide 240 by 4 it is 60 miles faster than the other which is 55 miles per hour.
