Algebra 1MediumSystems of Equations ShareSystems of Equations · Medium problemSolve the system for xxx and yyy.{−3x−y=−39x+5y=15\begin{cases} - 3 x - y = -3 \\ 9 x + 5 y = 15 \end{cases}{−3x−y=−39x+5y=15 Show answer Walk through it step by step Practice more like this Review this concept