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Mathematics 7 Online
OpenStudy (howard-wolowitz):

Help with one question!

OpenStudy (howard-wolowitz):

@icecreamman

OpenStudy (anonymous):

are you trying to find what the solutions to x y and z are?

OpenStudy (howard-wolowitz):

yes

OpenStudy (anonymous):

ok so im gonna solve with gaussian's elimination method is that ok?

OpenStudy (howard-wolowitz):

what ever works for you

OpenStudy (anonymous):

Step 1: Multiply first equation by −1 and add the result to the second equation. The result is: x + y - z = 1 - y + 3z = -1 2x + 2x = 4

OpenStudy (anonymous):

Multiply first equation by −2 and add the result to the third equation. The result is: x + y - z = 1 -y +3z = -1 +2z = 2

OpenStudy (anonymous):

Step 3: Solve for z. 2z = 2 z = ? Step 4: Solve for y. -y + 3z = -1 Step 5: Solve for x by substituting z and y into the first equation

OpenStudy (anonymous):

you got that?

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