Question

\(\dfrac{-1}{3}.\dfrac{2}{5}\)

\(\dfrac{-3}{7}.\dfrac{4}{15}\)

\(\dfrac{-9}{3}.\dfrac{15}{27}\)

\(\dfrac{-5}{6}.\)( -12 )

\(\dfrac{-12}{4}.\dfrac{8}{9}\)

\(-3.\dfrac{7}{6}\)

\(\dfrac{-15}{9}.\dfrac{27}{5}\)

\(-9.\dfrac{4}{27}\)

Answer 1

-2/15

-4/35

-5/3

10

-8/3

-7/2

-9

-4/3

Chúc em học giỏi

Answer 2

\(=\dfrac{-2}{15}\\ =\dfrac{-4}{35}\\ =-1\\ =10\\ =\dfrac{-8}{3}\\ =-7\\ =-9\\ =\dfrac{-4}{3}\)

Answer 3

-2/15

-4/35

-5/3

10

-8/3

-7/2

-9

-4/3

 

Answer 4

\(\dfrac{-1}{3}.\dfrac{2}{5}=\dfrac{-2}{15}.\\ \dfrac{-3}{7}.\dfrac{4}{15}=\dfrac{-4}{35}.\\ \dfrac{-9}{3}.\dfrac{15}{27}=-3.\dfrac{5}{9}=\dfrac{-5}{3}.\)

\(\dfrac{-5}{6}.\left(-12\right)=10.\\ \dfrac{-12}{4}.\dfrac{8}{9}=-3.\dfrac{8}{9}=\dfrac{-8}{3}.\\ -3.\dfrac{7}{6}=\dfrac{-7}{2}.\)

\(\dfrac{-15}{9}.\dfrac{27}{5}=\dfrac{-5}{3}.\dfrac{27}{5}=-9.\\ -9.\dfrac{4}{27}=\dfrac{-4}{3}.\)

Answer 5

-2/15

-4/35

-5/3

10

-8/3

-7/2

-9

-4/3

ht