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OpenStudy (anonymous):
Choose the value of the x determinant (Dx) in the following system. 3x – 4y = –7 x + y = 7
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OpenStudy (anonymous):
3x-4(7-x)=-7 3x+x-28=-7 4x=28-7=21 x=21/4
OpenStudy (anonymous):
Thank You so much!
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