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March 29, 2017

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Solve the system of equations: what is the y-value in the solution?

3x - 5y = -16 and 2x + 5y = 31

  • algebra - ,

    add them:
    5x = 15
    x = 3

    sub into 2x+5y=31
    6 + 5y = 31
    5y = 25
    y = 5

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