Solve the equation for x
Substitute the given value of x into the equation 3x+2y+z=13
Substitute the given value of x into the equation 2x+y+3z=9
Simplify the expression
Substitute the given value of x into the equation -y+9z=1
Solve the equation for y
Substitute the given value of y
Simplify the expression
(x,y,z) = (5,-1,0)
