x + y = 4 ও x - y = 2 হলে (x, y) এর মান কত?

A (2,4) 

B (4,2) 

C (3,1) 

D (1,3)

Solution

Correct Answer: Option C

x + y = 4..................(1)
x - y = 2.................(2)

(1) + (2) ⇒
x + y + x - y = 4 + 2
2x = 6
x = 3

(1) ⇒
x + y = 4
3 + y = 4
y = 4 - 3
y = 1

x ও y এর মান যথাক্রমে 3, 1 

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