1. TÍNH NHANH
\(\dfrac{3}{7}+\dfrac{5}{3\cdot7}+\dfrac{7}{3\cdot19}+\dfrac{9}{7\cdot19}\)
2. KO QUY ĐỒNG HÃY SO SÁNH
\(\dfrac{3}{4};\dfrac{5}{6};\dfrac{7}{10}\)
Loga
Toán lớp 6
1. TÍNH NHANH
\(\dfrac{3}{7}+\dfrac{5}{3\cdot7}+\dfrac{7}{3\cdot19}+\dfrac{9}{7\cdot19}\)
2. KO QUY ĐỒNG HÃY SO SÁNH
\(\dfrac{3}{4};\dfrac{5}{6};\dfrac{7}{10}\)
