Question 872258


x= 	weight of 	blue blocks						
y=	weight of 	red blocks						
 								
4	x	+	5	y	=	32	.............1	
								
1	x	+	8	y	=	35	.............2	
Eliminate	y							
multiply (1)by		-8						
Multiply (2) by		5						
-32	x		-40	y	=	-256		
5	x	+	40	y	=	175		
Add the two equations								
-27	x				=	-81		
/	-27							
x	=	3						
plug value of			x	in (1)				
4	x	+	5	y	=	32		
12		+	5	y	=	32		
			5	y	=	32		-12
			5	y	=	20		
				y	=	4		
x=	3		weight of 	blue blocks				
y=	4		weight of 	red blocks				
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