x 3

a. 3 : 11 = \(\dfrac{3}{11}\)

b. -4 : 7 = \(\dfrac{-4}{7}\)

c 5 : ( -13)  = \(\dfrac{5}{-13}=\dfrac{-5}{13}\)

d x : 3 \(\left(x\in z\right)\)

= \(\dfrac{x}{3}\)

\(a,3:11=\dfrac{3}{11}=\dfrac{-3}{-11}\\ b,-4:7=\dfrac{-4}{7}=\dfrac{4}{-7}\\ c,5:\left(-13\right)=\dfrac{5}{-13}=\dfrac{-5}{13}\\ d,x:3=\dfrac{x}{3}=\dfrac{-x}{-3}\)

\(a.\\ 5:\left(-13\right)=\dfrac{-5}{13}\)

\(b.\\ x:3=\dfrac{x}{3}\)

\(c.\\ 6=\dfrac{6}{1}\)

\(d.\\ 1.25=\dfrac{5}{4}\)

-x/3

k mik nha

và x/3 nữa

thông cảm vì mik mới zô ko bt ghi +-x

c) Ta có: k:(-5) (k ∈ Z) ⇒ Có phân số là k/-5

\(\frac{x}{5}\)\(\left(x\inℤ\right)\)

hello

\(a,3:11=\frac{3}{11}\)

\(b,-4:7=\frac{-4}{7}\)

\(c,5:\left(-13\right)=\frac{5}{-13}=\frac{-5}{13}\)

\(d,x:3=\frac{x}{3}\)

a) \(\frac{3}{11}\)

b) \(\frac{-4}{7}\)

c) \(\frac{5}{-13}\)

d)    \(\frac{x}{3}\)

a) 3 : 11 = \(\frac{3}{11}\)

b) -4 : 7 = \(\frac{-4}{7}\)

c) 5 : (-13) = \(\frac{-5}{13}\)

d) x : 3 = \(\frac{x}{3}\)

a)  − 3 7

b)  1 8

c)  5 9

d)  a 7

- 3 5