যদি (6x - y, 13) = (1, 3x + 2y) হয়, তাহলে (x, y) = কত?

A (2,3)

B (3,2)

C (1,5)

D (5,1)

Solution

Correct Answer: Option C

 দেওয়া আছে, (6x-y, 13) = (1, 3x+2y)

∴ 6x - y = 1

⇒ y = 6x - 1..........(i)

এবং 3x + 2y = 13

⇒ 3x + 2 (6x-1) = 13

⇒ 3x + 12x - 2 = 13

⇒ 15x = 15

⇒ x = 1

 (i) নং এ x এর মান বসিয়ে পাই, y = 6.1-1

                                            = 6-1

                                            = 5

∴ (x, y) = (1,5)

 

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