Thread: DS - equation
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Old July 31st, 2008, 01:21 AM
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hengirl03 hengirl03 is offline
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Quote:
Originally Posted by VSG View Post
IMO C


1)e+d=-12
e=12
d= -24
and e=-24 d=12 so +ve or -ve insuff

2) similary to 1 we can prove d as +ve or -ve

now taken togeater

e-d<-12
add e+d to both side
2e<-24
e<-12
since e<-12 e could be -13,-14,-15...
to satisfy eq1
d>0
hence C
I'm sorry, but i don't get the third part of your explanation.
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