$17.50. I got stuck on this problem before too.
Each dvd cost $7.50 how? Your friends buy 8 dvd's and in total is 60, you want to divide 60 from 8 and find that it's 7.50 and then multiply 8 to 7.50 and it should be 60. Hope this helps!!
0.0135135135135135135135135 etc
https://photomath.net/s/6O312e
^ that link will show you step by step and explain it, rather than writing a whole paragraph, Hope that helps:)
Answer:
let width be x
Step-by-step explanation:
2x-6+3+2x-6+3=18
4x+6=18
4x=18-6
4x=12
x=12/4
x=3
