Question

Find x if x + y = 5, and x - y = 7​

Answer 1

Answer:

Step-by-step explanation:

x+y=5....... (1)

x-y=7.......... (2)

Adding ( 1 ) & ( 2 )

x+y+x-y=5+7

2x=12

x=12/2

x=6

Answer 2

Answer:

Step-by-step explanation:

Adding both the equations, we get

x+y+x-y = 7+5

2x =12

x = 12/2 = 6.