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  • 02-10-2017
  • Mathematics
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35 POINTS. I need help! Please!

35 POINTS I need help Please class=
35 POINTS I need help Please class=
35 POINTS I need help Please class=

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Аноним Аноним
  • 02-10-2017
there is no solution  for the first one

if you eliminate y   you get 2 equations
-13x - 13z = -25
-13x - 13x = -15    

- there is no solution to theses

a23  means the element in the second  row and the 3rd column

so its -5 
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