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OpenStudy (anonymous):
solve the linear system using substitution 4x-y=5 4x+4y=-4
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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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