Tổng \(\dfrac{1111}{2525}+\dfrac{2323}{5050}\) bằng
\(\dfrac{9}{10}\). \(\dfrac{1}{10}\). \(\dfrac{7}{10}\). \(\dfrac{1}{2}\). Hướng dẫn giải:\(\dfrac{1111}{2525}+\dfrac{2323}{5050}\)\(=\dfrac{11}{25}+\dfrac{23}{50}=\dfrac{22}{50}+\dfrac{23}{50}=\dfrac{45}{50}=\dfrac{9}{10}\)