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v+c=5 14.95v+16.88c=76.88 Multiply the second equation to get rid of the decimals Replace v in the second equation with 5-c from the first equation and solve. I believe it was 10 nephews last night.
It wasn't me. This is my 1st day on this group. Please, go check original poster from last night!
I still don't get it.
Did you multiply the second equation by 100 to get rid of the decimals?
(100)14.95v + (100)16.88c = (100)76.88 1495v + 1688c = 7688 Is that right?
Now from the first equation, v=5-c replace v with 5-c and solve
1495v + 1688c = 7688 1495(5-c) + 1688c =7688 7475-1495c+1688c=7688 7475-193c=7688 -7475 -7475 -193c=213 Is that right?
7475-193c=7688 Should be 7475+193c
I got the 7475+193c=7688 I messed up my signs 7475+193c=7688 -7475 -7475 193c=213 c=1.10
Are you sure you copied the problem right? It should come out to be a whole number of videos and cd's. Someone posted this same problem last night and I thought it was 10 nephews. Please check the problem.
let me check
Her total is $76.68 not 76.88 as I posted,
1495v + 1688c = 7668 1495(5-c) + 1688c =7668 7475-1495c+1688c=7668 7475+193c=7668 -7475 -7475 193c=193 So she bought 1 CD
Yes and 4 videos
It makes sense. I have trouble setting up application problems.
Everyone does in the beginning. The key is to keep practicing.
How do we give medals? I am new. I would like to give u a medal