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Mathematics 16 Online
OpenStudy (anonymous):

please help me get started with using elimination method for -7x-y = -30 4x + y = 21

OpenStudy (anonymous):

when u add both the equatins y will be eliminated and u will get only x.

OpenStudy (anonymous):

ok I got the 'x' value and then I solved for 'y' but it doesnt check

OpenStudy (anonymous):

-3x=-9 x=3 12+y=21 y=9 Nw check

OpenStudy (anonymous):

ohhh ok :)

OpenStudy (anonymous):

now it checks...minor error on my behalf :) tytytyty

OpenStudy (anonymous):

yw

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