Question 617988
3	x	+	1	y	=	4	.............1				
y	=	4-3x					
					
-2	x	+	-10	y	=-12		.....................2			
Substitute y in		(2)									
-2x-10(4-3x)=	-12
-2x-40	+30x=	-12			
-2x+30	x	=	28					
28	x	=	28								
/	28										
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      	

Solution (1,1)									
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