Question

Answer 1

a) 1/11 + -5/11 = -4/11

b) -5/24 + 11/24 = 1/4

c) 11/10 . -7/24 = -77/240

d) 3/5 . 5/6 = 1/2

e) -8/3 . 15/7 = -40/7

f) -2/5 . 4 1/2 = -9/10

g) 5/3 : 5/-3 = -1

h) 5/4 : -9 = -5/36

Answer 2

Giải giúp mik với

 

Answer 3

lớp 6 r mà còn ko bít quy đồng

Answer 4

a)\(=\dfrac{1-5}{11}=\dfrac{4}{11}\)

b)\(=\dfrac{-5+11}{24}=\dfrac{6}{24}=\dfrac{1}{4}\)

c)\(=\dfrac{132}{120}+\dfrac{35}{120}=\dfrac{167}{120}\)

d)\(=\dfrac{18}{30}-\dfrac{25}{30}=-\dfrac{7}{30}\)

Answer 5

a)

\(\dfrac{1}{11}+\dfrac{-5}{11}=\dfrac{-4}{11}\)

b)

\(\dfrac{-5}{24}+\dfrac{11}{24}=\dfrac{6}{24}=\dfrac{1}{4}\)

c)

\(\dfrac{11}{10}-\dfrac{-7}{24}=\dfrac{132}{120}-\dfrac{-35}{120}=\dfrac{167}{120}\)

d)

\(\dfrac{3}{5}-\dfrac{5}{6}=\dfrac{18}{30}-\dfrac{25}{30}=\dfrac{-7}{30}\)

e)

\(\dfrac{-8}{3}.\dfrac{15}{7}=\dfrac{-40}{7}\)

f)

\(\dfrac{-2}{5}.\dfrac{9}{2}=\dfrac{-9}{5}\)

g)

\(\dfrac{5}{3}:\dfrac{5}{-3}=-1\)

h)

\(\dfrac{5}{4}:\left(-9\right)=\dfrac{5}{4}.9=5\)

Answer 6

h) 5/4 : -9 = -5/36