\(\frac{7}{13}.\frac{5}{9}+\frac{7}{13}.\frac{8}{9}-\frac{14}{26}.\frac{13}{9}\)
\(=\frac{7}{13}.\frac{5}{9}+\frac{7}{13}.\frac{8}{9}-\frac{7}{13}.\frac{13}{9}\)
\(=\frac{7}{13}.\left(\frac{5}{9}+\frac{8}{9}-\frac{13}{9}\right)\)
\(=\frac{7}{13}.0\)
\(=0\)
_Chúc bạn học tốt_
ai tích mình mình tích lại cho
\(\frac{7}{13}\times\frac{5}{9}+\frac{7}{13}\times\frac{8}{9}-\frac{7}{13}\times\)\(\frac{13}{9}\)
\(=\frac{7}{13}\times\frac{5}{9}+\frac{7}{13}\times\frac{8}{9}-\frac{7}{13}\times\frac{13}{9}\)
\(=\frac{7}{13}\times\left(\frac{5}{9}+\frac{8}{9}-\frac{13}{9}\right)\)
\(=\frac{7}{13}\times0\)
\(=0\)
~~~Hok tốt~~~
\(\frac{7}{13}\cdot\frac{5}{9}+\frac{7}{13}\cdot\frac{8}{9}-\frac{14}{26}\cdot\frac{13}{9}=\frac{7}{13}\cdot\frac{5}{9}+\frac{7}{13}\cdot\frac{8}{9}-\frac{7}{13}\cdot\frac{13}{9}=\frac{7}{13}\cdot\left(\frac{5}{9}+\frac{8}{9}-\frac{13}{9}\right)=\frac{7}{13}\cdot0=0\)