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If we have an expression as $2 x − 3 = 16$ then x is:

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answer is B.

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Detailed Solution

2 x − 3 = 16

On squaring,

2 x − 3 2 = 162

2 x − 3 = 256

We know,

256 = 28

2 x − 3 = 28

Now use:

a m = a n

x − 3 = 8 x − 3 + 3 = 8 + 3 x = 11

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