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28 May, 15:06

21. What is the value of x if 5: (3x+2) = 7: (5x-2).

A. 6

B. 5

C. 7.

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Answers (1)
  1. 28 May, 15:25
    0
    5 / (3x+2) = 7 / (5x-2)

    5 * (5x-2) = 7 * (3x+2) (x is not equal to - 3/2 or 2/5)

    25x - 10 = 21x + 14 (x is not equal to - 3/2 or 2/5)

    4x = 24 (x is not equal to - 3/2 or 2/5)

    x = 6 (valid)
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