Question 568888
13x+7y	=	88	.............1	
x+8y=-38	.............2	
Eliminate y								
multiply (1)by 		-8						
Multiply (2) by		7						
-104x-56y=-704		
7x+56y	=-266		
Add the two equations								
-97x=-970		
/-97							
x=10						
plug value of 			x	in (1)				
13	x	+	7	y	=	88		
130		+	7	y	=	88		
			7	y	=	88		-130
			7	y	=	-42		
				y	=	-6	

(10,-6)