SOLUTION: I need some help PLEASE!!!! solve each of the following by substitution 8x-4y=16 y=2x-4 Thanks Heather

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Question 109906: I need some help PLEASE!!!!
solve each of the following by substitution
8x-4y=16
y=2x-4
Thanks
Heather
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!

Substitute y=2x-4 back into the first equation and solve for the x-term
8x-4(2x-4)=16
8x-8x+16=16
0+16=16
=16-16
0=0
Solution: Infinate solutions; same line