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8 September, 13:49

Which statement is correct?

A. The equation 3 (3x-2) - 4=5x has no solution

B. The equation 4 (2x-3) - 5=4x has exactly one solution

C. The equation 5 (3x-2) - 2=3x has exactly two solutions

D. The equation 6 (2x-3) - 3=2x has infinitely many solutions

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Answers (1)
  1. 8 September, 14:31
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    We can conclude that only option B is correct.

    Step-by-step explanation:

    A. The equation 3 (3x - 2) - 4 = 5x has a solution.

    Solving it we get,

    3 (3x - 2) - 4 = 5x

    ⇒ 9x - 6 - 4 = 5x

    ⇒ 4x = 10

    ⇒ x = 2.5

    B. The equation 4 (2x - 3) - 5 = 4x has exactly one solution.

    Solving it we get,

    4 (2x - 3) - 5 = 4x

    ⇒ 8x - 12 - 5 = 4x

    ⇒ 4x = 17

    ⇒ x = 4.25

    C. The equation 5 (3x - 2) - 2 = 3x also has exactly one solution.

    Solving it we get,

    5 (3x - 2) - 2 = 3x

    ⇒ 15x - 10 - 2 = 3x

    ⇒ 12x = 12

    ⇒ x = 1

    D. The equation 6 (2x - 3) - 3 = 2x also has exactly one solution.

    Solving it we get,

    6 (2x - 3) - 3 = 2x

    ⇒ 12x - 18 - 3 = 2x

    ⇒ 10x = 21

    ⇒ x = 2.1

    Therefore, we can conclude that only option B is correct. (Answer)
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