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Mathematics 13 Online
OpenStudy (anonymous):

7x+2y=-6 -14x-4y=-2 solve by subsitution

OpenStudy (amistre64):

no solutions that I can see

OpenStudy (anonymous):

It has to be

OpenStudy (amistre64):

no, it doesnt have to be; sub it in and see that im right

OpenStudy (amistre64):

-2(7x+2y=-6) = -14x-4y=12 12 not= -2; ever

OpenStudy (amistre64):

but thats by elimination; sub it in and see that you get the same results

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