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5 April, 10:16

Solve each proportion. Show your work.

a. 2x/7 = 12/14

b. 3/x-1 = 5/7

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Answers (1)
  1. 5 April, 10:35
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    2x / 7 = 12 / 14

    Start by cross multiplying

    28x = 84

    Divide both sides by 28

    x = 3

    b) 3 / x - 1 = 5 / 7

    Start by cross multiplying

    21 = 5x - 5

    Flip the equation

    5x - 5 = 21

    +5 + 5

    5x = 26

    x = 26/5
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