sepia
Lv 7
sepia asked in Science & MathematicsMathematics · 8 months ago

Could someone please help me with a few problems on the Elimination Method?

1)

5x - y = 12

3x + y = 4

2)

2x - y = -6

2x - 2y = -4

4 Answers

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  • 8 months ago
    Favorite Answer

    5x - y = 12

    3x + y = 4

    Add the two equations.

    8x = 16

    x = 2

    3(2) +y = 4

    y = -2

    Check it.

    5(2) - (-2) = 12

    Checks.

    2x -y = -6

    2x -2y = -4

    Subtract the two equations.

    y = -2

    2x -(-2) = -6

    x = -4

  • Como
    Lv 7
    7 months ago

    1)

    Add :-

    8x = 16

    x = 2

    6 + y = 4

    y = - 2

    x = 2 , y = - 2

  • Mike G
    Lv 7
    8 months ago

    1) Add equations

    8x = 16

    x = 2, y = -2

    2) Subtract equations

    y = -2, x = -4

  • Anonymous
    8 months ago

    So your getting your answers from Yahoo. You are not really studying. Don't tell me you are smart.

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