text: 2015-02-07T20:46:04-05:00
  I'll try my best to answer this question to the best of my abilities.
  
  3x+y=5
  3x+(2x)=5
  5x=5
  x=1
  
  Thank you
  I was uncertain of the order of operation
  Oh. Well, no problem then.
  that is only subsitution
  2015-02-07T20:52:58-05:00
  
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  subsitution means subsituteing something for another and getting the answer
  the way to do this is to get an easy equation and make it equal to only one placeholder so
  y=2x
  so you can subsitute y for 2x anywhere you see a y
  3x+y=5
  subsitutute
  3x+2x=5
  5x=5
  divide both sides by 5
  x=1
  subsitute
  y=2(1)
  y=2
  
  elimination is when you elimintate one of the terms by adding the equations together and canceling som of them out
  so y=2x
  subtract y from both sides
  0=2x-y or 2x-y=0
  
  add this to the second equation
  3x+2x+y-y=0+5
  5x=5
  divide both sides by 5
  x=1
  subsitute
  y=2(1)
  y=2
  
  x=1
  y=2