Question

Which of the following is a solution of x+y=6andx-y=2 is

Answer 1

let x be 4 and y be 2.

then, x+y=6

4+2=6

and, x-y=2

4-2=2

Answer 2

$x + y = 6 \: - - - - - (i) \\ x - y = 2 - - - - - (ii) \\ on \: solving \: both \: the \: equations \\ 2x = 8 \\ x = 4 \\ putting \: the \: value \: of \: x \: in \: (i) \\ y = 6 - 4 \\ y = 2$

Hope it will help you at some extent...