Question 490530
6	x	+	7	y	=	14	.............1				
4	y	=	25		-1	x	---------2				
/	4	=									
	y	=	6.25		-0.25	x					
Substitute y in 		(1)									
6	x	+	7	(	6.25		-0.25	x	)	=	14
6	x	+	43.75	+	-1.75	x	=	14			
6	x		-1.75	x	=	14	-43.75				
4.25	x	=	-29.75								
/	4.25										
x=	-7										
Plug the value of x in (1)											
6	x	+	7	y	=	14					
6	*	-7	+	7	y	=	14				
-42	+	7	y	=	14						
7	y	=	56								
/	7										
y=	8										
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