Question 454404
x+y=3	.............1		
-x+y=3	.............2		
Eliminate y									
multiply (1)by 	-1							
Multiply (2) by	1							
-1	x		-1	y	=	-3			
-1	x		1	y	=	3			
Add the two equations									
-2x	=0			
/-2								
x=	0.00							
plug value of 			x	in (1)					
x+y=3			
y=3


unique solution ( 0,3)