Question 559401
a-2b=2.................(1)
a+b=2(b+3)
a+b=2b+6
a-b=6..................(2)


a-2b=	2
a-b=	6
Eliminate y						
multiply (1)by 		-1				
Multiply (2) by		2				
-a+2b=-2
2a-2b=12
Add the two equations						
a	=	10
	
plug value of 			a	in (1)		
1	a	+	-2	b	=	2
10		+	-2	b	=	2
			-2	b	=	2
			-2	b	=	-8
				b	=	4.00