anonymous
  • anonymous
Solve the system of equations and give your answer as an ordered pair: 3y + 2x = 17 -x - 4y = -21
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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precal
  • precal
what method would you like to use?
anonymous
  • anonymous
it's either substitution or elimination
precal
  • precal
which do you like?

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More answers

anonymous
  • anonymous
elimination
precal
  • precal
ok do you want to cancel out the x's or the y's? Tell me what number you are going to multiply to which equation?
anonymous
  • anonymous
the x's second equation
precal
  • precal
ok you might want to rewrite the equations so that the x and y are underneath each other
precal
  • precal
|dw:1333569378906:dw|
precal
  • precal
what number do you multiply to equation 2 to make the x's cancel out
anonymous
  • anonymous
1
precal
  • precal
no
anonymous
  • anonymous
3
precal
  • precal
no
anonymous
  • anonymous
6
precal
  • precal
|dw:1333569507506:dw|
anonymous
  • anonymous
2
precal
  • precal
yes
anonymous
  • anonymous
i thought about putting that
precal
  • precal
|dw:1333569548378:dw|
precal
  • precal
ok distribute the 2 to everything in the ( ), what do you get? You can reply using my drawing, click on the pencil on the upper right hand side
anonymous
  • anonymous
|dw:1333569528644:dw|
precal
  • precal
yes
precal
  • precal
|dw:1333569714680:dw|
precal
  • precal
add both equations together and what do you get?
precal
  • precal
I can help you for about 10 more minutes then I have to go
anonymous
  • anonymous
|dw:1333569715202:dw|
precal
  • precal
|dw:1333569888166:dw|
precal
  • precal
|dw:1333569913840:dw|
anonymous
  • anonymous
|dw:1333569795605:dw|
precal
  • precal
recall 2x and -2x make the x's go away
precal
  • precal
I did not understand what you wrote , -5y=-25 so what is y?
anonymous
  • anonymous
5
precal
  • precal
yes y=5
precal
  • precal
|dw:1333570054041:dw|
precal
  • precal
can you solve for x now?
precal
  • precal
I will be leaving soon, I have a couple of more minutes left
precal
  • precal
|dw:1333570362931:dw|
precal
  • precal
x=-1 y=5 solution is (-1, 5)

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