Question 421529
7x+5y=7	.............1	
4x-5y=-51.............2	
								
Add the two equations								
								
11x+=-44		
								
/11							
								
x=-4		
								
plug value of 			x	In (1)				
								
7x+5y=7		
-28+5y=	7		
5y=7+28
5y=35		
y=7