Question 731664
x= 	number of  	general laborers						
y=	number of 	no of mechanics						
 								
70.00	x	+	90.00	z	=	1950.00	.............1	
Total value								
80.00	x	+	100.00	z	=	2200.00	.............2	
Eliminate	y							
multiply (1)by		-10.00						
Multiply (2) by		9.00						
-700.00	x		-900.00	z	=	-19500.00		
720.00	x	+	900.00	z	=	19800.00		
Add the two equations								
20.00	x				=	300.00		
/	20.00							
x	=	15.00						
plug value of			x	in (1)				
70.00	x	+	90.00	z	=	1950.00		
1050.00		+	90.00	z	=	1950.00		
			90.00	z	=	1950.00		-1050.00
			90.00	z	=	900.00		
				z	=	10		
x=	15		number of  	general laborers				
y=	10		number of 	no of mechanics				
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