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If x = a and y = b is the solution of th...

If x = a and y = b is the solution of the equations x - y =2 and x + y = 4 , then the values of a and b are, respectively

A

a=3, b=1

B

a=1, b=3

C

`a= -3, b= -1`

D

`a= -3, b= 1`

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