Question 999539
3	x	+	1	y	=	4	.............1				
Total value											
-3	x	+	1	y	=	-2	.............2				
Eliminate	y										
multiply (1)by		-1									
Multiply (2) by		1									
-3	x		-1	y	=	-4					
-3	x	+	1	y	=	-2					
Add the two equations											
-6	x				=	-6					
/	-6										
x	=	1									
plug value of			x	in (1)							
3	x	+	1	y	=	4					
3		+		y	=	4					
				y	=	4		-3			
				y	=	1					
				y	=	1					
x=	1									
y=	1		

SUBSTITUTION METHOD																	
																	
					3    	x	+	1    	y	=	4    	.............1					
					1    	y	=	4    	+	-3    	x						
					/	1    	=										
						y	=	4    	+	-3    	x						
					-3    	x	+	1    	y	=	-2    		.....................2				
					Substitute y in		(2)										
					-3    	x	+	1    	(	4    	+	-3    	x	)	=	-2    	
					-3    	x	+	4    	+	-3    	x	=	-2    				
					-3    	x		-3    	x	=	-6    						
					-6    	x	=	-6    									
					/	-6    											
					x=	1    											
					Plug the value of x in (1)												
					3    	x	+	1    	y	=	4    						
					3    	*	1    	+	1    	y	=	4    					
					3    	+	1    	y	=	4    							
					1    	y	=	1    									
					/	1    											
					y=	1    											
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