Question 785778
5	x		-2	y	=	3	.............1	
Total value								
10	x		-4	y	=	5	.............2	
Eliminate	y							
multiply (1)by		-4						
Multiply (2) by		2						
-20	x		8	y	=	-12		
20	x		-8	y	=	10		
Add the two equations								
0	x				=	-2		


NO SOLUTION

The lines are parallel