Algebra 1HardSystems of Equations ShareSystems of Equations · Hard problemHow many solutions does this system have?{5x−7y=420x−28y=16\begin{cases} 5 x - 7 y = 4 \\ 20 x - 28 y = 16 \end{cases}{5x−7y=420x−28y=16Ainfinitely many solutionsBexactly one solutionCno solutionCheck Show answer Walk through it step by step Practice more like this Review this concept