Question

[Vũ Nguyễn Anh Thúy 6/7]

 e) (-1/3).(5/7) = ?

f) (2/7):(3/4) = ?

cứu em với ạ . giải chi tiết giúp em nhaa❤

Answer 1

[★彡✿ทợท彡★]

e) \(\left(\dfrac{-1}{3}\right)\cdot\dfrac{5}{7}=\dfrac{\left(-1\right)\cdot5}{3\cdot7}=\dfrac{-5}{21}\)

f) \(\dfrac{2}{7}:\dfrac{3}{4}=\dfrac{2}{7}\cdot\dfrac{4}{3}=\dfrac{8}{21}\)

Answer 2

[Tryechun🥶]

\(e.\left(\dfrac{-1}{3}\right).\dfrac{5}{7}=\dfrac{\left(-1\right).5}{3.7}=\dfrac{-5}{21}\\ f.\dfrac{2}{7}:\dfrac{3}{4}=\dfrac{2}{7}.\dfrac{4}{3}=\dfrac{2.4}{7.3}=\dfrac{8}{21}\)