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March 26, 2017

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Solve -2(3x+2y-3)>12

  • Algebra 2 - ,

    - 2 ( 3 x + 2 y - 3 ) > 12

    - 2 * 3 x - 2 * 2 y - 2 * ( - 3 ) > 12

    - 6 x - 4 y + 6 > 12

    - 4 y > 12 + 6 x - 6

    - 4 y > 6 x + 6

    - 4 y > 6 ( x + 1 ) Divide both sides by - 4

    If you multiply or divide both sides of an inequality by a negative number, you must reverse the direction of the inequality sign!

    y < - 6 ( x + 1 ) / 4

    y < -3 ( x + 1 ) / 2

    y < 3 x / 2 - 3 / 2

  • Algebra 2 - ,

    remark:

    y < - 6 ( x + 1 ) / 4

    are same as

    y < 6 ( x + 1 ) / - 4

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