anonymous
  • anonymous
What is the value of x in the following system: y=2x+5 y=-3x+10
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
ok.... since both equations start off as "y=..." set them equal to each other....
anonymous
  • anonymous
what do you mean equal to each other?
anonymous
  • anonymous
2x+5 = -3x+10

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anonymous
  • anonymous
OHHHHH!! OK I got x=-3
anonymous
  • anonymous
no... try again.... be careful...
anonymous
  • anonymous
x=3
anonymous
  • anonymous
how did u get that? try again...
anonymous
  • anonymous
okay so i got 2x+15=-3x and then i subtracter -2 from -3 on the other side
anonymous
  • anonymous
ok... you moved the 10 over from the right side so that means you needed to SUBTRACT 10 from both sides... that 15 should be a -5... ????
anonymous
  • anonymous
OHHHHH! SORRY!! I forgot to do inverse operation !
anonymous
  • anonymous
so let's take it from there now.... 2x - 5 = -3x what next?
anonymous
  • anonymous
you subtract -2 from -3x
anonymous
  • anonymous
you mean subtract 2x from both sides.... ??? 2x - 5 -2x = -3x -2x
anonymous
  • anonymous
can you simplify both sides??
anonymous
  • anonymous
|dw:1360045806698:dw|
anonymous
  • anonymous
you're solving for x so you do not want to cancel x.... cancel the -5 instead...|dw:1360045928707:dw|
anonymous
  • anonymous
now solve for y....
anonymous
  • anonymous
ok its y=2
anonymous
  • anonymous
how did u get that? you can use either equation from the beginning....
anonymous
  • anonymous
just plug in x=1 to either equation to find y...
anonymous
  • anonymous
yeah that's exacly what i did @dpaInc oohh wait i checked it and i got 7 now
anonymous
  • anonymous
lol... that's correct now...
anonymous
  • anonymous
YAYxD they are asking for the value of x and in the beggining we talked that it was x=1
anonymous
  • anonymous
oh... you didn't need to find the value for y ???
anonymous
  • anonymous
no.but that's alright dont worry.thanks so much,i suck at algebra so i really need all the help i can get=D
anonymous
  • anonymous
you don't suck at algebra.... just need practice like everyone else.... keep up the good work... cya! :)

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