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math

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solve for x and y when 5x-3y-2=0 and 7x+y=0.

Please this is sooo hard. no clue how to do it. please show me how to do it.

  • math -

    5x - 3y = 2
    7x + y = 0
    Triple the last equation (both sides)
    21x + 3y = 0
    Add the first and third equations:

    26x = 2
    x = 1/13

    5/13 - 3y = 2 = 26/13
    3y = -21/13
    y = -7/13

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