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Mathematics
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OpenStudy (mindblast3r):
help
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OpenStudy (anonymous):
ok what do u need help with
OpenStudy (mindblast3r):
\[\frac{ xy }{ xy(y-x) }=\frac{ 1 }{ y-x }\]
OpenStudy (mindblast3r):
how are these equivalent?
OpenStudy (anonymous):
um i hate to say this but this is totally new to me so sorry
OpenStudy (mindblast3r):
its okay.
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OpenStudy (mindblast3r):
@campbell_st
OpenStudy (mindblast3r):
@mathstudent55 @Luigi0210
OpenStudy (campbell_st):
look at
\[\frac{xy}{xy(y - x)}\]
do you see a common factor.
That is a term that is in the numerator and denominator...?
OpenStudy (campbell_st):
I'll write it this way
\[\frac{xy \times 1}{xy \times (y - x)}\]
OpenStudy (mindblast3r):
top xy cancels out with the bottom xy
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OpenStudy (mindblast3r):
so i guess the top is just left with a 1?
OpenStudy (mindblast3r):
is that how it works?
OpenStudy (campbell_st):
yes, that's it.
OpenStudy (mindblast3r):
i didn't understand how the 1 was there.
OpenStudy (campbell_st):
well remember 1 is a factor of any number or term
1 x 15 = 15 1 x y = y 1 x abc = abc
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OpenStudy (mindblast3r):
well i still don't understand. i mean i understand everything what you have told me. but like 1 * xy = xy not 1
OpenStudy (mindblast3r):
you get what i'm saying?
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