যদি (a/b)x-3 = (b/a)x-5 হয়, তবে x এর মান কত?

A 8

B 5

C 4

D 3

Solution

Correct Answer: Option C

   (a/b)x-3 = (b/a)x-5
or,(a/b)x-3 x (a/b)x-5 =1
or,(a/b)x-3+x-5 =1
or, (a/b)2x-8 = (a/b)0
or, 2x - 8 = 0
or,  2x = 8
∴ x = 4

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