Asked by Tory Smith

The cost of thirteen CDs and seven DVDs is $99.80; and the cost of seven DVDs and twelve CDs is $84.11.
Answered by helper
want do you need to find?

this problem is not complete
Answered by Jen
13c+7d=99.8
12c+7d=84.11
Multiply the 2nd equation by -1
13c+7d=99.8
-12c-7d=-84.11
c=
Plug that back into either original equation to solve for d.
There are no AI answers yet. The ability to request AI answers is coming soon!