Question 547050
-2	x	+	2	y	=	-2	.............1	
1	x		-1	y	=	1	.............2	
Eliminate 	y							
multiply (1)by 		1						
Multiply (2) by		2						
-2	x		2	y	=	-2		
2	x	+	-2	y	=	2		
Add the two equations								
0	x				=	0

there are infinite solutions
if you  draw the graph of the lines the lines coincide.