Question

Answer 1

\(=\left(1+\dfrac{6}{5}-\dfrac{8}{7}\right)\cdot\dfrac{-3}{5}=\dfrac{35+42-40}{35}\cdot\dfrac{-3}{5}=\dfrac{37}{35}\cdot\dfrac{-3}{5}=\dfrac{-111}{175}\)

Answer 2

công hết trong ngoặc 

= 72/25 : -5/3

= - 216/175

Answer 3

=(1+6/5−8/7)⋅−3/5=35+42−40/35⋅−35=3735⋅−35=−111175