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The given equation is \"\".

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Replace a in \"\" \ \

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Choose a starting value using mental math.

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\"\" and \"\" so  1 is too low and 10 is too high.

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Then a lies between 1 and 10

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a

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        \"\"  \ \

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Values of \"\"

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       4

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\"\"

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        22 \ \

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       5 \ \

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\"\"

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       30 \ \

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       6 \ \

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\"\"

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       38 \ \

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Since a = 6 makes the equation is equals \"\" is 6.\"\"

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The solution set is 6.