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x-y=5

-4x+4y=20 

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Guest Aug 29, 2017

Best Answer 

 #1
avatar+91031 
+2

Please include your question in the body of your post .. not just in the title :/

 

x-y=5      (1a)          becomes       x=5+y  (1b)

-4x+4y=20  (2a)     becomes         -x+y=5     becomes      x=y-5 (2b)

 

Put these together and we get

 

5+y=y-5

That is never going to happen :(

 

So there are no solutions.   Yes it is very sad :((

Melody  Aug 29, 2017
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1+0 Answers

 #1
avatar+91031 
+2
Best Answer

Please include your question in the body of your post .. not just in the title :/

 

x-y=5      (1a)          becomes       x=5+y  (1b)

-4x+4y=20  (2a)     becomes         -x+y=5     becomes      x=y-5 (2b)

 

Put these together and we get

 

5+y=y-5

That is never going to happen :(

 

So there are no solutions.   Yes it is very sad :((

Melody  Aug 29, 2017

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