<PRE><B>Question 516236</B>
0.3x-0.2y=4 
multiply by 10
3x-2y=40.............1

 and 0.2x + 0.3y=29/19

multiply by 190

38x+57y=290.............2

3	x		-2	y	=	40	.............1	
38	x	+	57	y	=	290	.............2	
Eliminate y								
multiply (1)by 		57						
Multiply (2) by		2						
171	x		-114	y	=	2280		
76	x		114	y	=	580		
Add the two equations								
247	x				=	2860		
/	247							
x	=	11.58			
plug value of 			x	in (1)				
3	x	+	-2	y	=	40		
34.74		+	-2	y	=	40		
			-2	y	=	40-34.74
			-2	y	=	5.26		
				y	=	-2.63
</PRE>