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algebra

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my question is this how do you solve this equation?
x=3y-1
x+2y=9
solve each system of equation by the substitution method.

  • algebra - ,

    Substitute 3y -1 for x in the second equation, and solve the resulting equation for y

    3y -1 + 2y = 9
    which leads to
    5y = 10
    Take it from there

  • algebra - ,

    (3y-1) + 2y = 9
    5y - 1 = 9
    5y = 10
    y=2

    x=3(2)-1
    x=5

    (5,2)

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