-0,52:x= -936/100: 1638/100

-52/100:x=-4/7

           x= -52/100:-4/7

           x= 0,91

-0,52/x=-9,36:16,38

=>x.-9,36=-0,52.16,38

x.-9,36=-8,576

x         =8,576:9,36=0,91

bạn ghi rõ đề câu b ra đi ạ

a)\(\dfrac{x}{27}=-\dfrac{2}{3,6}\)

\(\Rightarrow\)\(3,6x=27.(-2)\)

\(\Leftrightarrow\)\(3,6x=54\)

\(x=-15\)

-0,25:x=-4/7

x=-0,25:(-4/7)

x=7/16

Vậy x=7/16

tk mk nha

-0.25:x=-4/7

x=-0.25:(-4/7)

x=7/16

vậy x=7/16

-0,25 : x = -9,36 : 16,38

=> -25/100 : x = -936/100 : 1638/100

=> -1/4      : x = -4/7

=>               x = -1/4 : -4/7

=>               x = -1/4 . -7/4

=>               x = 7/16 

Chúc bạn học tốt!!!

-0,52 : x = -9,36 : 16,38

=> \(\frac{-0,52}{x}=\frac{-9,36}{16,38}\) 

=> x = \(\frac{-0,52.16,38}{-9,36}\) = 0,91

-0,52:x=-9,36:16,38

\(\frac{-0,52}{x}\)= \(\frac{-9,36}{16,38}\)

\(\Rightarrow\left(-0,52\right).16,38=x.\left(-9,36\right)\)

\(\Rightarrow x=\frac{-8,5176}{-9,36}\)

\(\Rightarrow x=0,91\)

\(Vậy,x=0,91\)

-0,52:x=-4/7

x=-0,52:-4/7

x=-13/25:-4/7

x=-13/25.-7/4

x=-91/100

vậy x=-91/100

\(-\dfrac{13}{25}:x=-\dfrac{4}{7}\)

\(x=-\dfrac{13}{25}:\left(-\dfrac{4}{7}\right)\)

\(x=-\dfrac{13}{25}.\left(-\dfrac{7}{4}\right)\)

\(x=\dfrac{91}{100}\)

\(-0,52:x=-9,36:16,38\)

\(\Rightarrow\frac{-52}{100}:x=\frac{-936}{100}:\frac{1638}{100}\)

\(\Rightarrow\frac{-13}{25}:x=\frac{-234}{25}:\frac{819}{50}\)

\(\Rightarrow\frac{-13}{25}:x=\frac{-234}{25}.\frac{50}{819}\)

\(\Rightarrow\frac{-13}{25}:x=\frac{-11700}{20475}\)

\(\Rightarrow x=\frac{-13}{25}:\frac{-4}{7}\)

\(\Rightarrow x=\frac{-13}{25}.\frac{-7}{4}\)

\(\Rightarrow x=\frac{91}{100}\)