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Mathematics 10 Online
OpenStudy (anonymous):

Help will medal. Find the solution of this system of equations. x-8y=21 3x-8y=15

OpenStudy (danjs):

multiply equation 1 by -3 add them solve for y use that y in either equation and find x

OpenStudy (anonymous):

solve eq(1) for y put it the value for y in the second then solve for x use x in either eq to solve for y

OpenStudy (anonymous):

so what is the answwer ?

OpenStudy (danjs):

x=-3 and y=-3

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