Question 680783
1	x	+	1	y	=	7	.............1	


y=2x-2
2x-y=2 
2	x		-	y	=	2	.............2	
Eliminate	y							
multiply (1)by		1						
Multiply (2) by		1						
1	x		1	y	=	7		
2	x		-1	y	=	2		
Add the two equations								
3	x				=	9		
/	3							
x	=	3						
plug value of			x	in (1)				
1	x	+	1	y	=	7		
3		+		y	=	7		
				y	=	7		-3
				y	=	4		
				y	=	4		
x=	3						
y=	4	
(3,4) is the solution					
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