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Mathematics 17 Online
OpenStudy (anonymous):

Solve the following system of equations by using the elimination method. -4x – 2y = -12 4x + 8y = -24 A. (5, 3) B. (-6, -6) C. (3, 1) D. (6, -6)

pooja195 (pooja195):

so opposites will cancel out so 4x's cancels

pooja195 (pooja195):

whats -2 + 8?

pooja195 (pooja195):

do you know?

OpenStudy (anonymous):

that would be positive 6

pooja195 (pooja195):

12+-24 = ? now you have 6y

OpenStudy (anonymous):

-12

pooja195 (pooja195):

whats -12/6

OpenStudy (anonymous):

-2

pooja195 (pooja195):

\[-4x-2(-2)=-12\] good now solve this :) we plugged in -2 to the 1st equation to get the x value

OpenStudy (anonymous):

-4x -4 = -12 right?

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