Question 456867
5	x	+	-4	y	=	-8	.............1	
3	x	+	7	y	=	14	.............2	
								
multiply (1)by 		7						
Multiply (2) by		4						
35	x		-28	y	=	-56		
12	x	+	28	y	=	56		
Add the two equations								
47	x				=	0		
/	47							
x	=	0.					
plug value of 			x	in (1)				
5	x	+	-4	y	=	-8		
0		+	-4	y	=	-8		
			-4	y	=	-8	
			-4	y	=	-8		
				y	=	2