Question 454255
1	x	+	8	y	=	31	.............1	
2	x	+	7	y	=	35	.............2	
Eliminate y								
multiply (1)by 		-7						
Multiply (2) by		8						
-7x-56y	=-217		
16x+56y	=280		
Add the two equations								
9x=63		
/9							
x=7						
plug value of 			x	in (1)				
x+8y=31		
7+8y=31		
8y=31-7
8y=24		
y=3