Kết quả của phép tính \(4\dfrac{5}{9}:\Big(\dfrac{-5}{7}\Big)+5\dfrac{4}{9}:\Big(\dfrac{-5}{7}\Big)\) là
\(\dfrac{-50}{4}.\)\(\dfrac{50}{7}.\)\(-14\).\(14\).Hướng dẫn giải:\(4\dfrac{5}{9}:\Big(\dfrac{-5}{7}\Big)+5\dfrac{4}{9}:\Big(\dfrac{-5}{7}\Big)\\ =4\dfrac{5}{9}.\Big(\dfrac{-7}{5}\Big)+5\dfrac{4}{9}.\Big(\dfrac{-7}{5}\Big)\\ =\Big(\dfrac{-7}{5}\Big).\Big(4\dfrac{5}{9}+5\dfrac{4}{9}\Big)\\ =\Big(\dfrac{-7}{5}\Big).10=-14.\)
