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Solve the system of equations and give your answer as an ordered pair: 3y + 2x = 17 -x - 4y = -21

Mathematics
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what method would you like to use?
it's either substitution or elimination
which do you like?

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Other answers:

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

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