(5+x)+4 = 3(x+1) হলে x এর মান কত?

A 4

B 5

C 2

D 3

Solution

Correct Answer: Option D

   (5+x)+4 = 3(x+1) 

= 5 + x + 4 = 3x + 3 

= 3x - x = 9 - 3 

= 2x = 6 

= x = 6/2 

   x = 3 

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