Solve the following equation:
9x + 99 = 999

x = 99

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x = 100

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x = 90

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x = -99

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Solution

The correct option is B x = 100
9x + 99 = 999
On solving,
9x = 999 - 99
$\Rightarrow$ 9x = 900
$\Rightarrow$ x = $\frac{900}{9} = 100$

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