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Mathematics 15 Online
OpenStudy (anonymous):

-6x-2y=8 7x-2y=-5

OpenStudy (jhannybean):

use the process of elimination Multiply the first equation by +2 -(-6x-2y=8) 7x-2y=-5 _____________ 6x +2y = -8 7x -2y = -5 ______________ Add the remainders together 13x +0y = -13 13x = -13 x = -1

OpenStudy (jhannybean):

Now you take x=-1 and you plug it into either one of the two equations 7(-1) -2y = -5 -7 -2y = -5 -2y = -5 + 7 -2y = 2 y = 2/-2 y = -1

OpenStudy (jhannybean):

And there you go :)

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