anonymous
  • anonymous
Solve the system: x+y+z=4 x+2y-z=2 3z=x-3y
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Luigi0210
  • Luigi0210
matrix time
Loser66
  • Loser66
100% agree
Luigi0210
  • Luigi0210
set it up as a matrix

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texaschic101
  • texaschic101
or elimination
Loser66
  • Loser66
@texaschic101 not easy to go on that way
anonymous
  • anonymous
how would you use elimination for this problem?
Loser66
  • Loser66
you are better set up matrix, texaschic off line. cannot guide you
whpalmer4
  • whpalmer4
Not really that hard with elimination. \[x+y+z=4\]\[x+2y-z=2\]\[-x+3y +3z= 0\] Add rows 1 and 2 to get \[2x+3y = 6\] Add rows 2 (mult by 3) and 3 to get \[2x+9y = 6\]Subtract the two resulting rows to get an equation that is very easy to solve :-) Plug result into previous equations.
texaschic101
  • texaschic101
I prefer elimination....that is just my opinion

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