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college math

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5u+2v=-15
3u+v=-8 Im not sure how to do this problem

  • college math -

    double the 2nd:
    6u + 2v = -16
    5u + 2v = -15
    subtract them:
    u = -1
    sub into 2nd:
    -3 + v = -8
    v = -5

    v = -5 and u = -1

    (curious why you called this "college math", this is grade 7 )

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