Question 695682
3	x		-4	y	=	-10	.............1		
									
2	x	+	5	y	=	70	.............2		
Eliminate	y								
multiply (1)by		5							
Multiply (2) by		4							
15	x		-20	y	=	-50			
6	x	+	20	y	=	280			
Add the two equations									
21	x				=	230			
/	21								
x	=	11							
plug value of			x	in (1)					
3	x		-4	y	=	-10			
33			-4	y	=	-10			
			-4	y	=	-10		-33	
			-4	y	=	-43			
				y	=	11			
x=	11								
y=	11								
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