Question 1047833
x+2y-5z= -12
<u>2x+2y-3z= -2</u>
3x - 8z = -14
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2x+2y-3z= -2
3x-4y-z=11
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4x+4y-6z= -4
<u>3x-4y-z=11</u>
7x - 7z = 7
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3x - 8z = -14
x - z = 1 ***
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3x - 8z = -14
<u>-3x + 3z = -3</u>
-5z = -15
z = 3, x = 4 {{{1+3}}}***, y =  {{{2x+2y-3z= -2}}}, {{{y =( -8 + 9 -2)/2}}}
(4, -1/2, 3)