My tenants pay part of the spectrum internet bill. How do I claim it on my taxes?

Two of my tenants pay me directly for spectrum internet service every month.  I pay the monthly spectrum bill. The total amount of the bill is $159.98.  One tenant pays $50.00 and my 2nd tenant pays $79.99.  I pay the remaining amount of $29.99.  How do I claim these amounts on my taxes?