Question

1 Using elimination method
solve the pair of linear
equations x + y = 4, x - y = 2
where x = _ and y =
O (3,1)
O (1,3)
O (3,-1)
PO (-3,1)​

Answer 1

Step-by-step explanation:

We Have :-

$x + y = 4 \\ \\ \\ x - y = 2$

To Find :-

$values \: of \: x \: and \: y$

Method Used :-

$elimination$

Solution :-

$x + y = 4 - - - - (1)\\ \\ \\ x - y = 2 - - - - (2) \\ \\ \\ adding \: (1) \: and \: (2) \\ \\ \\ x + y = 4 \\ \\ \\ x - y = 2 \\ \\ \\ 2x = 6 \\ \\ \\ x = \dfrac{6}{2} \\ \\ \\ x \: = \: 3 \\ \\ \\ putting \: in \: (1) \\ \\ \\ we \: get \\ \\ \\ y \: = 1$