Try another version of this question Solve the system of equations. If the system has a unique solution, give it as an ordered triple: `(x,y,z)` Get help: Box 1: Enter your answer as a point. Example: (2,5.5172)
` { ( x-2y+z = -15), ( y+2z = 0), ( x+y+3z = -7) :} `
`(-5,4,-2)`