Question

7. Find the value of x and y of the pair of linear equations x + y = 9 and x-y=9.​

Answer 1

Answer:

x+y=9

x-y=9

by elimination

2x =18

x=9

y=9-9

y=0

hence x = 9 , y=0

Answer 2

Explanation:

In x+y= 9

(x, y) =(4,5)

In x-y=9

(x, y) =(10,1)

[The values may be different for different assumptions]

See the photos of answer for complete answer...