Algebra 2HardSystems of Equations

Systems of Equations · Hard problem

Solve the system for $x$ , $y$ and $z$ .

\begin{cases} 3 x + 4 y + 4 z = 29 \\ - 4 y + z = 5 \\ 3 x - 4 y - 4 z = -11 \end{cases}