Posted by **Anonymous** on Wednesday, January 7, 2009 at 8:47pm.

what di di do wrong in this???

the question is: x-8y=18

-16x+16y=-8

i did :

first multiplied the first equation with 2

then

2x-16y=36

-16+16y=-8

-----------

-14x=28

x=28/-14

x=-2

now

x-8y=18

(-2)-8y=18

-8y=18+2

-8y=20

y=20/-8

y= 2.5

plz help me what did i do wrong??

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