Question 633049
1	a	+	6	b 	=	5	.............1
							
1	a	+	3	b 	=	-1	.............2
Eliminate	y						
multiply (1)by		1					
Multiply (2) by		-2					
1	a		6	b 	=	5	
-2	a		-6	b 	=	2	
Add the two equations							
-1	a				=	7	
/	-1						
a	=	-7					
plug value of			x	in (1)			
1	a	+	6	b 	=	5	
-7		+	6	b 	=	5	
			6	b 	=	5	+
			6	b 	=	12	
				b 	=	2	

a=-7,b=2