Question 560949
2x+1y=5	.............1	
1x+2y	=	4	.............2	
Eliminate y								
multiply (1)by 		-2						
Multiply (2) by		1						
-4x-2y=	-10		
1x+2y=	4		
Add the two equations								
-3x=-6		
/-3							
x=2 			
plug value of 			x	in (1)				
2x+1y=5		
4+1y=5		
			1	y	=	5		-4
				y	=	1