Given parameters:
Signup fee for Cabletown = $5
Charge per video = $0.50
Sign up fee for Networkflicks = $12
Charge per video = $0.15
Unknown:
The number of videos watched in which the cost of both months will be thesame = ?
Solution:
Let the number of videos= x
Now let us set up algebraic equations to solve this problem;
   5 + 0.5x = 12 + 0.15x
  Collect like terms and solve;
    5 - 12  = 0.15x  - 0.5x
       -7  = -0.35x
        x  = 20
The number of videos watched will be 20 videos