SOLUTION: y=2x x-y=4

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Question 1136254: y=2x
x-y=4
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
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From the first equation, substitute y = 2x into the second equation.
You will get then


x - 2x = 4,

-x     = 4   ====>  x = -4.


Then from  y = 2x  you get  y = -8.


Answer.  x = -4;  y = -8.