Question 785776
6	x	+	7	y	=	4	.............1	
Total value								
5	x	+	8	y	=	-1	.............2	
Eliminate	y							
multiply (1)by		-8						
Multiply (2) by		7						
-48	x		-56	y	=	-32		
35	x	+	56	y	=	-7		
Add the two equations								
-13	x				=	-39		
/	-13							
x	=	3						
plug value of			x	in (1)				
6	x	+	7	y	=	4		
18		+	7	y	=	4		
			7	y	=	4		-18
			7	y	=	-14		
				y	=	-2		
x=	3					
y=	-2