2x + 1 = 8x + 1 হলে x এর মান কত?

A 1/2

B 1

C 3/2

D - 1

Solution

Correct Answer: Option D

2x + 1 = 8x + 1 
⇒ 2x + 1 = 23(x + 1)
⇒ 2x + 1 = 23x + 3
⇒ x + 1 = 3x + 3
⇒ 3x - x = 1 - 3
⇒ 2x = - 2
∴ x = - 1

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