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-   -   How to solve substitution (https://www.askmehelpdesk.com/showthread.php?t=300192)

  • Jan 6, 2009, 09:48 PM
    mariarosamaripo
    how to solve substitution
    2x-3=-y
    3x+5y=2
  • Jan 6, 2009, 10:01 PM
    ISneezeFunny

    2x - 3 = -y

    multiply the entire thing by (-1)

    y = 3 - 2x

    substitute into second equation

    3x + 5(3 - 2x) = 2

    3x + 15 - 10x = 2

    you can solve the rest.

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