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Mathematics 17 Online
OpenStudy (anonymous):

Use Cramer's rule to solve the following linear expression: x+y-z=5 2x-y+3z=-3 2x+3y =-4

OpenStudy (anonymous):

you guys there?

OpenStudy (anonymous):

I will get it done later

OpenStudy (anonymous):

i hope this link can help you http://www.purplemath.com/modules/cramers.htm

OpenStudy (anonymous):

\[x_j = \frac{ \det(A_j) }{ \det(A) }\]where A_j is the matrix obtained by replacing the j'th column with column b let me know if this is unclear (and which part of it)

OpenStudy (anonymous):

for this problem, x_1 = x x_2 = y x_3 = z

OpenStudy (anonymous):

zeinas!!!!!!!

OpenStudy (anonymous):

I do help understanding cramer's rule

OpenStudy (anonymous):

do you think you could walk me step by step in this problem?

OpenStudy (abb0t):

Ok. Well, set up ur matrix.

OpenStudy (anonymous):

I can do 2x2 cramer's rule

OpenStudy (anonymous):

ok let me set it up

OpenStudy (abb0t):

Yes, set it up. I will walk you thru it. It is simlar to solving a 2x2

OpenStudy (anonymous):

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