Question 766883
9.00	a	+	9.00	b 	=	20.00	.............1	
Total value								
1.00	a	+	4.00	b 	=	5.00	.............2	
Eliminate	y							
multiply (1)by		-4.00						
Multiply (2) by		9.00						
-36.00	a		-36.00	b 	=	-80.00		
9.00	a	+	36.00	b 	=	45.00		
Add the two equations								
-27.00	a				=	-35.00		
/	-27.00							
a	=	1.30						
plug value of			a	in (1)				
9.00	a	+	9.00	b 	=	20.00		
11.67		+	9.00	b 	=	20.00		
			9.00	b 	=	20.00		-11.67
			9.00	b 	=	8.33		
				b 	=	0.93		
x=	1.30						
y=	0.93						
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