Question 573481
2	x	+	1	y	=	3	.............1		
1	x	+	1	y	=	-4	.............2		
Eliminate	y								
multiply (1)by		-1							
Multiply (2) by		1							
-2	x		-1	y	=	-3			
1	x	+	1	y	=	-4			
Add the two equations									
-1	x				=	-7.00			
/	-1								
x	=	7      							
plug value of			x	in (1)					
2	x	+	1	y	=	3			
14		+	1	y	=	3			
				y	=	-11	

(7,-11) is the solution 		
						
						
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