Question 431199
6x-y+z	=	2--------------	1
4x+2y-3	z=18--------------2
x-3y+2z=-5--------------3
consider equation 1 &2	Eliminate y											
Multiply 1 by	2								
Multiply 2 by	1								
we get															
12x-2y	+2z=4					
4x+2y-3z=18					
Add the two 															
16x-1z=22-------------4
consider equation 2 & 3															
Multiply 2 by 				3											
Multiply 3 by				2											
we get 															
12x+6y-9z=54						
2x-6y+4z=-10						
Add the two 															
14x-5z=44	-------------5				5	
Consider (4) & (5)															
Multiply 4 by				-14											
Multiply (5) by				16											
	we get															
-224x+14z=-308									
224x-80z=704									
Add the two 															
-66z=396									
/-66														
z=-6													
																
Plug the value of z in						5									
14x+30	=44									
14x=14									
x=1													
plug value of x & z in					1										
6-1y-6=	2								
-y=-6+6+2								
-y=2												
y=-2