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Marcela M
Marcela M asked in Science & MathematicsMathematics · 1 decade ago

Solve this system of 3 equations. Make sure you give all three answers in an ordered triple.?

Solve this system of 3 equations. Make sure you give all three answers in an ordered triple.

x + y + z = 1

x + 2y + z = -1

3x + 4y + 2z = -2

2 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    from the first equation you get

    z=1-x-y

    subs for z in the other two and solve as simultaneous equation

    x+2y+(1-x-y)=-1

    and

    3x+4y+2(1-x-y)=-2

    you get

    x=0, y=-2

    subs back into any equation

    z=3

    solution is: (0,-2,3)

  • Nelson_DeVon
    Lv 7
    1 decade ago

    (0,-2,3)

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