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Question

Solve: x−43+2x−335=5x−329−x+928.


A

20

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B

19

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C

5

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D

10

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Solution

The correct option is B

19


x43+2x335=5x329x+928
Multiplying throughout by 9, we have
3x12+18x2735=5x329x+8128
Transposing, 18x2735+9x+8128=2x20
Now clear of fractions by multiplying by 5×7×4 = 140.
Thus, 72x108+45x+405=280x2800
2800108+405=280x72x45x
3097=163x
x=19.


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