linsolve is used to solve a system of linear equations.
linsolve has two arguments: a list of equations or
expressions (in that case the convention is that the equation
is expression = 0), and a list of variable names.
linsolve returns the solution of the system in a list.
Input :
Output :
Which means that
x=− 
 , y= 
 , z=− 

is the solution of the system :
⎧ ⎪ ⎨ ⎪ ⎩ 
