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20 April, 15:25

Solve the inequality. 7x - 9 > 2x + 6

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Answers (2)
  1. 20 April, 17:02
    0
    The value of x is greater than the value of 3.

    We can treat inequalities like standard algebraic equations.

    7x - 9 > 2x + 6

    Add 9 to both sides.

    7x > 2x + 15

    Subtract 2x from both sides.

    5x > 15

    Divide both sides by 5.

    x > 3
  2. 20 April, 18:40
    0
    x>3 is the answer

    Step-by-step explanation:

    We are given one inequality

    7x-9>2x+6

    To solve this we can do additions and subtraction as we do for equations.

    Only for multiplication if negative number is used inequality changes

    So let us add 9 to both the sides

    7x>2x+6+9

    Now subtract 2x from both the sides

    7x-2x >15

    5x>15

    We divide by a positive number 5 without disturbing inequality sign.

    X>3 is the answer

    In interval notation we can write this as open interval

    (3,∞)

    In number line this is the region to the right of 3, not includig 3
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