Question 580629
	y	=	x-4							
2	x	+	-5	y	=	2						
Substitute y in		the second equation										
2	x	+	-5	(x-4)	=	2	
2	x	-5x+20	=	2				
2	x		-5	x	=	-18						
-3	x	=	-18									
/	-3											
x=	6      											
Plug the value of x in (1)												
-1	x	+	1	y	=	-4						
-1	*	6      	+	1	y	=	-4					
-6      	+	1	y	=	-4

y=6-4							
y	=	2      									
    											
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