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very odd math og 122

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very odd math og 122

by simba12123 » Fri Oct 31, 2008 8:34 am
AN operation $ is defined by the equation a$b = (a-b)/(a+b), for all number such that a does not equal negative b. IF a does not equal negative c and a$c=o, then c =?b.

a. -a
b.-1/a
c. 0
d.1/a
e.a

qa is e

having trouble picking numbers here. what is the simplest approach?
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Re: very odd math og 122

by stubbornp » Fri Oct 31, 2008 10:52 am
simba12123 wrote:AN operation $ is defined by the equation a$b = (a-b)/(a+b), for all number such that a does not equal negative b. IF a does not equal negative c and a$c=o, then c =?b.

a. -a
b.-1/a
c. 0
d.1/a
e.a

qa is e

having trouble picking numbers here. what is the simplest approach?
a$b = (a-b)/(a+b)

a$c=0...

i.e a$c = (a-c)/(a+c)

there is only one case when a$c=0 when c=a

Answer should be E..hope it helps..
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