Question 559272
7	x	+	3	y	=	-12	.............1		
2	x	+	5	y	=	38	.............2		
Eliminate y									
multiply (1)by 		-5							
Multiply (2) by		3							
-35	x		-15	y	=	60			
6	x		15	y	=	114			
Add the two equations									
-29	x				=	174			
/	-29								
x	=	-6 				
plug value of 			x	in (1)					
7	x	+	3	y	=	-12			
-42		+	3	y	=	-12			
			3	y	=	-12	+	42	
			3	y	=	30			
				y	=	10