Question 471439
2	x	+	1	y	=	7	.............1		
1	x		-3	y	=	5	.............2		
									
multiply (1)by 		3							
Multiply (2) by		1							
6	x	+	3	y	=	21			
1	x		-3	y	=	5			
Add the two equations									
7	x				=	26			
/	7								
x	=	3.71		OR	26/7				
plug value of 			x	in (1)					
2	x	+	1	y	=	7			
7.43		+	1	y	=	7			
			1	y	=	7		-7.43	
			1	y	=	-0.43			
				y	=	-0.43OR	- 3/7