Question

bai2:  tinh gia tri bieu thuc: 9/11*(6/7-5/6) lam kieu gi 

giup minh voi 

minh tich 5 ban thoi nha

Answer 1

\(\dfrac{9}{11}\times\left(\dfrac{6}{7}-\dfrac{5}{6}\right)\)
\(=\dfrac{9}{11}\times\left(\dfrac{36}{42}-\dfrac{35}{42}\right)\)
\(=\dfrac{9}{11}\times\dfrac{1}{42}\)
\(=\dfrac{3}{154}\)