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13 September, 13:13

Find the value of c in the equation, 2 (x - 3) + 5x = 5 (2x + 6).

a. - 2

b. 2

c. 12 D - 12

+4
Answers (2)
  1. 13 September, 13:18
    0
    If you would like to solve the equation 2 * (x - 3) + 5 * x = 5 * (2 * x + 6), you can calculate this using the following steps:

    2 * (x - 3) + 5 * x = 5 * (2 * x + 6)

    2 * x - 2 * 3 + 5 * x = 5 * 2 * x + 5 * 6

    2 * x + 5 * x - 5 * 2 * x = 5 * 6 + 2 * 3

    7 * x - 10 * x = 30 + 6

    - 3 * x = 36 / (-3)

    x = 36 / (-3)

    x = - 12

    The correct result would be d. - 12.
  2. 13 September, 13:26
    0
    2x - 6 + 5x = 10x + 30

    (Distributive Property)

    7x - 6 = 10x + 30

    (Subtract 7x and 30 from both sides)

    10x - 7x

    -6 - 30

    -36 = 3x

    (divide by 3 to both sides

    x = - 12
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