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October 20, 2014

October 20, 2014

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

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??

- math help urgent -
**Sally**, Wednesday, January 7, 2009 at 8:55pmI can't see anything besides that y=-2.5 because you divide by a negitive

- math help urgent -
**Anonymous**, Wednesday, January 7, 2009 at 9:01pmoo....ok thanks sally

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