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Question

Solve: 2x+1=8x


A

1

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B

3

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C

13

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D

12

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Solution

The correct option is D

12


2x+1=8x
2x+1=(23)x

(am)n = am×n

2x+1=(2)3x
Since bases are equal powers should also be equal
x+1=3x
x=12


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