Can you provide an in-depth solution for: Larry started off having 150 channels from his cable company.  They took 20 channels away and replaced those with 12 channels.  He called the company and asked if he could reduce his package by 10 more channels but add the sports package which is 8 channels.  He realizes that he didn't add the supreme sports package.  He calls back and that package adds 7 more channels.  How many channels does Larry have?Hey there, could you help me solve this math problem: Larry started off having 150 channels from his cable company.  They took 20 channels away and replaced those with 12 channels.  He called the company and asked if he could reduce his package by 10 more channels but add the sports package which is 8 channels.  He realizes that he didn't add the supreme sports package.  He calls back and that package adds 7 more channels.  How many channels does Larry have?