3­x+2 = 81 হলে 3x-2 এর মান কত হবে?  

A    3

B    2

C    0

D    1

Solution

Correct Answer: Option D

 

3­x+2 = 81

3­x+2 =34

x+2=4

x=2

এখন

3x-2 =32-2=30=1

 

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