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24 March, 21:16

What 1/3x+9=21 answer?

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Answers (2)
  1. 24 March, 23:44
    0
    1/3x + 9 = 21 (subtract 9 from each side)

    . - 9 - 9

    1/3x = 12 (multiply 3 to each side)

    x = 12*3

    x=36
  2. 25 March, 00:10
    0
    1/3x+9=21

    Subtract 9 from both sides.

    1/3x+9-9=21-9

    1/3x=12

    Multiply both sides by 3.

    3 * (1/3x) = (3) * (12)

    x=36
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