Question

23 ifx=a, y=b is the solution of the pair of equations x-y=2 and x+y=4. then the respective values of a and bare
(a) 3, 5
(b) 5. 3
(c) 3.
(d) -1, -3​

Answer 1

Answer:

a = 3 , b = 1

Step-by-step explanation:

adding both the given equations,

x - y = 2

x + y = 4

_______

2x = 6

x = 3

substitute x value in x - y = 2

then , 3 - y = 2

3 - 2 = y

y = 1

given x = a , y = b

so, a = 3 , b = 1

Answer 2

Answer:

d

Step-by-step explanation:

here -1+(-3)= 4 and -1-(-3)=2