Question 515785
x + y = 6 ...........(1)
x - y = -2 ..........(2)

Add (1) and (2)
x + y = 6 
x - y = -2
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2x=4
2x/2=4/2
x=2

Put the value of x in (1)
x + y = 6 ...........(1)
2+y=6
y=6-2
y=4

x,y=2,4