Question 561134
3	x		-1	y	=	11	.............1
1	x		-3	y	=	9	.............2
Eliminate y							
multiply (1)by 		-3					
Multiply (2) by		1					
-9	x		3	y	=	-33	
1	x		-3	y	=	9	
Add the two equations							
-8	x				=	-24	
/	-8						
x	=	3 		
plug value of 			x	in (1)			
3	x	+	-1	y	=	11	
9		+	-1	y	=	11	
			-1	y	=	11	
			-1	y	=	2	
				y	=	-2