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8 September, 10:19

Solve the linear equation.

x-6/-3 + x+9/9 = x+4

a. {-27/11}

b. {-9/11}

c. {-45/11}

d. {-63/11}

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Answers (2)
  1. 8 September, 11:44
    0
    The correct answer is B. {-9/11}

    Step-by-step explanation:

    1. Let's solve the linear equation:

    x-6/-3 + x+9/9 = x+4

    -3 (x - 6) + x + 9 = 9 (x + 4) (Multiplying by 9 at both sides)

    -3x + 18 + x + 9 = 9x + 36

    -3x + x - 9x = 36 - 18 - 9 (Like terms)

    -12x + x = 36 - 27

    -11x = 9

    x = - 9/11

    2. Let's prove that x = - 9/11 is correct

    x-6/-3 + x+9/9 = x+4

    (-9/11 - 6) / -3 + (-9/11 + 9) / 9 = - 9/11 + 4

    (-75/11 * - 1/3) + (90/11 * 1/9) = - 9/11 + 44/11

    25/11 + 10/11 = 35/11

    35/11 = 35/11

    We proved that x = - 9/11 is correct.
  2. 8 September, 13:35
    0
    The answer is B

    -2x-27/9 = x+4

    Multiply both sides by 9 & then simplify

    -2x+26=9x+36

    Move all terms not containing (x) to the left side

    -11x+27=36

    -11x=9

    Divide each term by 11

    X = - 9/11
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