Question 423206
4x-7y=10	.............1	
x-y=7.............2	
								
multiply (1)by 	-1			
Multiply (2) by	7			
-4x+7y=-10		
7x-7y=49		
								
Add the two equations								
								
3x=39		
								
/3							
								
x=13 		
								
plug value of  x	in (1)				
								
4x-7y=10		
52-7y=10		
-7y=10-52
-7y=-42		
y=6