Question 565164
1	x	+	1	y	=	0	.............1	
-3	x	+	2	y	=	25	.............2	
Eliminate y								
multiply (1)by 		-2						
Multiply (2) by		1						
-2	x		-2	y	=	0		
-3	x		2	y	=	25		
Add the two equations								
-5	x				=	25		
/	-5							
x	=	-5			
plug value of 			x	in (1)				
1	x	+	1	y	=	0		
-5		+	1	y	=	0		
			1	y	=	0+5
			1	y	=	5		
				y	=	5