<PRE><B>Question 770172</B>
Add the equations to get


2x+4y=4
2x-4y=8
--------
4x+0y = 12




4x = 12


x = 12/4


x = 3



Now use this to find y


2x+4y=4


2(3) + 4y = 4


6 + 4y = 4


4y = 4 - 6


4y = -2


y = -2/4


y = -1/2


The solutions are x = 3 and y = -1/2
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