alberga

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3r-5s=-4 5r+3s=16 elimination method

  • alberga -

    3r-5s= -4
    5r+3s= 16

    Multiply the 1st equation by 5 and the second by 3...

    15r-25s= -20
    15r+9s=48

    Subtract both

    -34s= -68

    divide by -34

    s=2

    substitute

    3r-10= -4
    3r=6

    r=2

  • alberga -

    sixty is 5/6 of what number

  • alberga -

    60*6
    DUH!

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