Question 565827
4	x		-1	y	=	9	.............1	
1	x		-3	y	=	16	.............2	
Eliminate y								
multiply (1)by 		-3						
Multiply (2) by		1						
-12	x		3	y	=	-27		
1	x		-3	y	=	16		
Add the two equations								
-11	x				=	-11		
/	-11							
x	=	1					
plug value of 			x	in (1)				
4	x	+	-1	y	=	9		
4		+	-1	y	=	9		
			-1	y	=	9		-4
			-1	y	=	5		
				y	=	-5	

x=1,y=-5
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3	x	+	4	y	=	5	.............1	
2	x	+	1	y	=	1	.............2	
Eliminate y								
multiply (1)by 		1						
Multiply (2) by		-4						
3	x		4	y	=	5		
-8	x		-4	y	=	-4		
Add the two equations								
-5	x				=	1		
/	-5							
x	=	-0.20	OR -1/5					
plug value of 			x	in (1)				
3	x	+	4	y	=	5		
-0.6		+	4	y	=	5		
			4	y	=	5	+	0.6
			4	y	=	5.6		
				y	=	1.40	OR 7/5