SOLUTION: solve by addition x - y = -3 x - y = 4

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Question 19174: solve by addition
x - y = -3
x - y = 4
Answer by wuwei96815(245) About Me  (Show Source):
You can put this solution on YOUR website!
This set of equations does not have a solution.

Want proof?

x-y=-3 times -1 yields -x+y=3

Now add the two equations together:
-x+y=3 plus x-y=4 yields 0=7

Do you see now why there is no solution?