<PRE><B>Question 56411</B>
5X+2Y=5
3X+4Y=-23
IF YOU MULTIPLY THE FIRST EQUATION BY -2 WE GET
-10X-4Y=-10 NO ADD TO THE SECOND EQUATION
3X+4Y=-23
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-7X=33
X=-33/-7
X=33/7
5*33/7+2Y=5
165/7+2Y=5
2Y=5-165/7
2Y=(35-165)/7
2Y=-130/7
Y=(-130/7)/2
Y=-130/7*1/2
Y=-130/14
PROOF
5*33/7+2*-130/14=5
165/7-260/14=5
(330-260)/14=5
70/14=5
5=5</PRE>