Question 594235
2x+y=8	.............1				
y=8-2x					
x+2y=7					
Substitute y in		(2)									
x+2(8-2x)=7
x+16-4x	=7			
x-4x=-9					
-3x=-9								
/-3										
x=3      										
Plug the value of x in (1)											
2x+y=8					
2*3+y=	8				
6+y=8						
y=2      								
/1										
y=2      

The solution is (3,2)										
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