12 .27 = 2.9x+4  হলে x -এর মান কত ?

A

B

C

D 16 

Solution

Correct Answer: Option C

12 .27 = 2.9x+4  

বা, 4\( \times \)3\( \times \)(3) =4\( \times \)(3)x+4  

বা, 4\( \times \)33x+1  =4\( \times \)32x+8  

বা, 33x+1  = 32x+8  

বা, 3x+1 = 2x+8  বা, 3x-2x = 8-1       x = 7  

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