Solve the system by addition or substitution.
I ask for help with this and forgot to add the problem. can anyone help me understand how to do this?
answer: empty set
16x - 4(4x-4) = 20
16x - 16x - 16 = 20
-16 = 20
It doesn't work. Anonymous is right. Empty Set.
algebra - Anonymous, Monday, May 27, 2013 at 2:17pm