(x,y) -এর মান কত, যখন 2x+3y=7, 5x-2y=8

 

A (1,2)

B (2,1)

C (4,1)

D (1, 3)

Solution

Correct Answer: Option B

2x+3y=7…………(i)

5x-2y=8…………(ii)

(i)×2 and (ii)×3 then we get,

19x=38

or, x=2

x এর মান (i) বসাই,

2(2)+3y=7

or, 3y=7-4

or, y=1

So, (x,y)=(2,1)

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