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6 June, 05:22

What is the solution of 3|x - 5| + 2 = 20?

x = - 11 or x = 1

x = - 1 or x = 11

x = - 11 or x = 11

x = - 6 or x = 6

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Answers (2)
  1. 6 June, 05:42
    0
    x = - 1 or x = 11

    Step-by-step explanation:

    We have given a equation.

    3|x - 5| + 2 = 20

    We have to find the value of x.

    Adding - 2 to both sides of above equation, we have

    3|x - 5| + 2-2 = 20-2

    3|x - 5| + 0 = 18

    3|x - 5| = 18

    Dividing by 3 to both sides of above equation, we have

    (3|x - 5|) / 3 = 18 / 3

    |x - 5| = 6

    Applying absolute value definition to above equation, we have

    x-5 = - 6 or x-5 = 6

    x = -6+5 or x = 6+5

    x = - 1 or x = 11 which is the answer.
  2. 6 June, 07:18
    0
    The answer is x = 11 or x = - 1

    Step-by-step explanation:

    3 Ix - 5I + 2 = 20

    3 Ix - 5I = 20 - 2

    3 Ix - 5I = 18 ⇒ : 3 both sides

    Ix - 5I = 6

    ∴ x - 5 = 6 ⇒ ∴ x = 11

    OR

    ∴ - x + 5 = 6 ⇒ - x = 1 ⇒ ∴ x = - 1
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