Question 546879
8	x	+	4	y	=	-20	.............1	
5	x		-8	y	=	-23	.............2	
Eliminate 	y							
multiply (1)by 		2						
Multiply (2) by		1						
16	x		8	y	=	-40		
5	x	+	-8	y	=	-23		
Add the two equations								
21	x				=	-63.000		
/	21							
x	=	-3      						
plug value of 			x	in (1)				
8	x	+	4	y	=	-20		
-24		+	4	y	=	-20		
			4	y	=	-20	+	24
			4	y	=	4		
				y	=	1