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Mathematics 21 Online
OpenStudy (anonymous):

solve the linear system using substitution 4x-y=5 4x+4y=-4

OpenStudy (anonymous):

-y=-4x +5 y=4x - 5 4x + 4(4x - 5) = -4

OpenStudy (anonymous):

go from here. =)

OpenStudy (anonymous):

thank you

OpenStudy (anonymous):

welcome. =)

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