Question 673099
a	+	9	b 	=	1	.............1	
								
	a	+	3	b 	=	-5	.............2	
Eliminate	y							
multiply (1)by		1						
Multiply (2) by		-3						
1	a		9	b 	=	1		
-3	a		-9	b 	=	15		
Add the two equations								
-2	a				=	16		
/	-2							
a	=	-8						
plug value of			a	in (1)				
1	a	+	9	b 	=	1		
-8		+	9	b 	=	1		
			9	b 	=	1	+	8
			9	b 	=	9		
				b 	=	1		
a	-8						
b 	1						
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