Algebra 2HardSystems of Equations ShareSystems of Equations · Hard problemSolve the system for xxx, yyy and zzz.{−2x−5y−4z=−105x+4y+3z=−10−3y−4z=−20\begin{cases} - 2 x - 5 y - 4 z = -10 \\ 5 x + 4 y + 3 z = -10 \\ - 3 y - 4 z = -20 \end{cases}⎩⎨⎧−2x−5y−4z=−105x+4y+3z=−10−3y−4z=−20 Show answer Walk through it step by step Practice more like this Review this concept