Question 999257
5	x	+	5	y	=	5	.............1	
Total value								
6	x	+	3	y	=	12	.............2	
Eliminate	y							
multiply (1)by		-3						
Multiply (2) by		5						
-15	x		-15	y	=	-15		
30	x	+	15	y	=	60		
Add the two equations								
15	x				=	45		
/	15							
x	=	3						
plug value of			x	in (1)				
5	x	+	5	y	=	5		
15		+	5	y	=	5		
			5	y	=	5		-15
			5	y	=	-10		
				y	=	-2