SOLUTION: If a*b=ab+1 and a~b=a+b+1 what is the value of 4*[(6~8)~(3*5)]?

Algebra.Com
Eval error:
ModPerl::Util::exit: (120000) exit was called at /home/ichudov/project_locations/algebra.com/templates/Algebra/Questions/MoreLikeThis.pm line 159