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6 April, 21:55

What is the value of x? 12x+34=9

A. 16 1/2

B. 16 3/4

C. 16 1/2

D. 4 1/2

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Answers (1)
  1. 7 April, 00:42
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    (1/2x + 3/4 = 9 (original equation)

    1/2x + 3/4 - 3/4 = 9 - 3/4 (subtracting 3/4 from the left so that way the numbers can be on one side)

    1/2x = 8 1/4 or 33/4 (after subtracting 3/4 from 9)

    4x = 66 (this is cross multiplying, you multiply 1x4 and 2 x33)

    x = 66/4, x = 33/2

    x = 16 1/2
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