Question

[Nguyễn Huyền Trang]

Tình nhanh

19/13+14/6+1/9+4/6+7/13+17/9

315/316×313/314×316/315×317/314

Cần gấp, ai đúng em tick

Answer 1

[Ng Bao Nam]

           \(\frac{19}{13}+\frac{14}{6}+\frac{1}{9}+\frac{4}{6}+\frac{7}{13}+\frac{17}{9}\)

\(=\left(\frac{19}{13}+\frac{7}{13}\right)+\left(\frac{14}{6}+\frac{4}{6}\right)+\left(\frac{1}{9}+\frac{17}{9}\right)\)

\(=\frac{26}{13}+\frac{18}{6}+\frac{18}{9}\)

\(=2+3+2\)

\(=7\)

              \(\frac{315}{316}\times\frac{313}{314}\times\frac{316}{315}\times\frac{317}{314}\)

\(=\left(\frac{315}{316}\times\frac{316}{315}\right)\times\left(\frac{313}{314}\times\frac{317}{314}\right)\)

\(=1\times1,006339\)

\(=1,006339\)

#Chúc bạn học tốt !

#k mình nhé ?