anonymous
  • anonymous
FAN AND MEDAL!!! For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation? -x - 2y = -4 3x + y = 12 -2y - 4 2y - 4 2y + 4 -2y + 4
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Are those the answer choices?
anonymous
  • anonymous
anonymous
  • anonymous
plz help guys!

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anonymous
  • anonymous
What do you think. WHich one?
anonymous
  • anonymous
Pick one you think and I will help from there.
anonymous
  • anonymous
I think it might be either B or C
anonymous
  • anonymous
Ok in order to isolate x in the first equation. What do you think you first step should be?
anonymous
  • anonymous
add 2y to both sides?
anonymous
  • anonymous
It is B
anonymous
  • anonymous
ty!
anonymous
  • anonymous
It could be B but it also could be D depending if they want your to get rid of the - sign For instane -x = 2y - 4 and you could use this for a subsitution but if you get ride of the -, which they probably want you to do the answer is D

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