Lumen OHM Assessment

Solve the system of equations. If the system has a unique solution, give it as an ordered triple: $(x, y, z)$ $(x,y,z)$

$⎧ ⎪ ⎨ ⎪ ⎩ \begin{matrix} x - 2 y + z = - 15 y + 2 z = - 5 x + y + 3 z = - 10 \end{matrix}$ ${ ( x-2y+z = -15), ( y+2z = -5), ( x+y+3z = -10) :}$

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