যদি x/y = y-4 হয়, তবে x এর মান কোনটি হবে? 

A    y-3

B    y-4

C    y-2

D    1/y 

Solution

Correct Answer: Option A

 

x/y = y-4 

=>x/y = 1/y4

=> x= y/y4

=> x=1/y3=y-3 

 

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