Question 553418
3x+5y+4z=13	--------------1
5x+2y+3z=-9	--------------2			
6x+3y+	4z=-8	--------------3			
															
consider equation 1 &2	Eliminate y											
Multiply 1 by	-2								
Multiply 2 by	5								
we get															
-6x-10y-8z=-26					
25x+10y+15z=-45					
Add the two 															
19x+0y	+7z=-71	-------------4
consider equation 2 & 3				Eliminate y											
Multiply 2 by 				-3											
Multiply 3 by				2											
we get 															
-15x-6y	-9z=27						
12x+6y+	8z=-8						
Add the two 															
-3x+0y-1z=19	-------------5					
Consider (4) & (5)			Eliminate x												
Multiply 4 by				3											
Multiply (5) by				19											
we get				2											
57x+21z	=-213									
-57x-19z=361									
Add the two 															
0x+2z=148									
/	2														
z=74      											
															
Plug the value of z in						5									
-3x-74=	19									
-3x=93												
x=-31      											
plug value of x & z in					1										
-93+5y+	296=13								
5y=93-296+13								
y=	-38