Question

7. The solution of equations X - Y = 2 and X + Y = 4 is ______
A 3 and 5
B 5 and 3
C 3 and 1
D -1 and -3
​

Answer 1

Answer:

3 and 1

Step-by-step explanation:

X - Y = 2...........(1)

X + Y = 4..........(2)

To cancel Y add both equations, we get

2X+0 = 6

 2X   = 6

   X   = 6/ 2

         = 3

To get Y substitute value of X in any equation,

X - Y = 2

  - Y = 2-3

  - Y = -1

    Y = 1

Therefore, the solutions are 3 and 1