Question 547512
-2	x	+	1	y	=	-5	.............1	
-3	x	+	4	y	=	55	.............2	
Eliminate 	y							
multiply (1)by 		-4						
Multiply (2) by		1						
8	x		-4	y	=	20		
-3	x	+	4	y	=	55		
Add the two equations								
5	x				=	75.00		
/	5							
x	=	15      						
plug value of 			x	in (1)				
-2	x	+	1	y	=	-5		
-30		+	1	y	=	-5		
			1	y	=	-5	+	30
			1	y	=	25		
				y	=	25