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20 February, 09:09

The difference of a number divided by

3

and

9

is equal to

8

.

+3
Answers (1)
  1. 20 February, 11:12
    0
    two divided by the difference of a number and 3 minus 4 divided by a number plus 3, equals 8 times the reciprocal of the difference of the number squared and 9.

    let x=number

    2 / (x-3) - 4 / (x+3) = 8 / (x^2-9) = 8 / (x+3) (x-3)

    LCD: (x+3) (x-3)

    2 (x+3) - 4 (x-3) = 8

    2x+6-4x+12=8

    -2x+18=8

    -2x=-10

    x=5
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