anonymous
  • anonymous
If possible, solve each system of equations. Use any method. If there is not a unique solution to a system , state a reason. 3x-11y=9 -9x + 33y =18 Need the steps please.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
ok, which method you want to use? elimination or substitution?
anonymous
  • anonymous
both
anonymous
  • anonymous
ok let's use elimination first 3x-11y=9 x3 -> 9x-33y=27 -9x + 33y =18 do addition, 9x-9x-33y+33y=27+18 0=45 both x and y are eliminated, so the system doesn't have solutions

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anonymous
  • anonymous
no unique solution as both variables are eliminated ie one equation is a product/multiple of the other not a true system
anonymous
  • anonymous
Thanks a lot
anonymous
  • anonymous
now we'll do substitution 3x-11y=9 3x= 9+11y x=3 + 11/3y -9x + 33y =18 -9(3 + 11/3 y) + 33y = 18 -18 -33y+33y = 18 we can't find y, so we also can't find x this prove that the system doesnt have solution
anonymous
  • anonymous
Thanks.

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