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Mathematics 20 Online
OpenStudy (brucebaner):

Which ordered pair is the solution to the system of equations? http://static.k12.com/bank_packages/files/media/mathml_07c39cc7a5266ae110e5bdbfa4a26061e35b5757_1.gif A. (8, 1) B. (−12, 2) C. (−4, −8) D. (4, −2)

OpenStudy (brucebaner):

@Ashleyisakitty

OpenStudy (brucebaner):

help me @DanJS

OpenStudy (brucebaner):

@SuperflyTyGuy

OpenStudy (brucebaner):

can you help me @SuperflyTyGuy

OpenStudy (superflytyguy):

I'm trying to solve my own math problems right now

OpenStudy (brucebaner):

ohh okay

OpenStudy (brucebaner):

help me @DanJS

OpenStudy (danjs):

This is the same as the last 3 or 4

OpenStudy (danjs):

multiply the second equation through by -1, then add them together

OpenStudy (danjs):

-3x + 4y = -20 -x - 4y = 4 -------------- -4x = -16 x = 4

OpenStudy (brucebaner):

so its B?

OpenStudy (brucebaner):

so is it C @DanJS

OpenStudy (brucebaner):

@DanJS

OpenStudy (brucebaner):

@Jhannybean

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