Question

.6 If x = a, y = b is the solution of the pair of equation x - y=2 and x + y=4 then

what will be value of a and b:

a) 2,1 b) 3,1 c) 4,6 d) 1 , u​

Answer 1

Answer:

(3, 1) will be the valve of a and b

Step-by-step explanation:

given, x=a, y=b

so, a-b=2...... (1)

a+b=4..... (2)

by solving both equations,

we get 2a=6

a=3 ( substitute in eq 1)

3-b=2, b=1

Answer 2

Step-by-step explanation: Given, x−y=2 and x+y=4.  

Adding both the equations, we get 2x=6  

⇒x=3  

Putting the value of x in one of the equations, we get  

3−y=2 ⇒y=1  

As stated in the question, x=a and y=b.

Thus, a=3 and b=1