SOLUTION: 2x - y = 10 4x - 2y = 7 I am supposed to use elimination, when i tried it several times i kept ending up with this: -4x + 2y = -20 4x - 2y = 7 This would cancel both the

Algebra.Com
Question 565125: 2x - y = 10
4x - 2y = 7
I am supposed to use elimination, when i tried it several times i kept ending up with this:
-4x + 2y = -20
4x - 2y = 7
This would cancel both the 4x's and 2y's.

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
If you add the last two equations together, you'll get

0x+0y = -13

or

0 = -13

which is always false. So there are no solutions and this system is inconsistent.
-------------------------------------------------------------------------------------------------
If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim

-------------------------------------------------------------------------------------------------

RELATED QUESTIONS

I believe this topic explains it best, i need to solve the system using the elimination... (answered by AnlytcPhil)
Hi- I have been working on this problem and I think I am doing it right. I am about... (answered by jim_thompson5910)
I need all work and steps to this problem please. Solve by elimination method 2y=4x+10 (answered by ankor@dixie-net.com)
4x-2y=5 y=2x+10 I tried putting y into the first equation but I came up with -20=5... (answered by Alan3354)
please solve it by Gaussian elimination i tried but not able to...... 3x+2y+5z=1800... (answered by Edwin McCravy)
Can someone help me with this .also i need clarification when doing Elimination. how do... (answered by Alan3354)
Hello out there,I need some help with some problems,the first one is,Use elimination to... (answered by MathLover1,elima)
Can you use either elimination or substitution (both would be nice but not... (answered by josgarithmetic)
x^2/y^2-3x^2y^-2+4x^-3x^5y^-2-8y^-2/x^-2 I've tried this several times and keep... (answered by longjonsilver)