1
2
giúp mình nhanh với
K
Khách
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Những câu hỏi liên quan
TP
3
14 tháng 2 2022
\(\dfrac{1}{2}=\dfrac{6}{12};\dfrac{2}{3}=\dfrac{8}{12};\dfrac{7}{12}=\dfrac{7}{12}\)
14 tháng 2 2022
Chắc là quy đồng nhỉ :)
\(\dfrac{1\times6}{2\times6}=\dfrac{6}{12};\dfrac{2\times4}{3\times4}=\dfrac{8}{12};\dfrac{7}{12}\)
Q
2
TT
4
K
26 tháng 2 2022
a) \(\dfrac{5}{4}+\dfrac{3}{5}=\dfrac{25}{20}+\dfrac{12}{20}=\dfrac{37}{20}\)
b) \(\dfrac{7}{8}+\dfrac{9}{24}=\dfrac{21}{24}+\dfrac{9}{24}=\dfrac{30}{24}=\dfrac{15}{12}\)
c) \(\dfrac{2}{36}+\dfrac{1}{6}+\dfrac{5}{12}=\dfrac{2}{36}+\dfrac{6}{36}+\dfrac{15}{36}=\dfrac{23}{36}\)
LG
5
TV
1
6 tháng 11 2021
\(a,=7xy\left(x^2-2xy+y^2\right)=7xy\left(x-y\right)^2\\ b,=3x\left(x-y\right)-5\left(x-y\right)=\left(3x-5\right)\left(x-y\right)\\ c,=x^2+3x+4x+12=\left(x+3\right)\left(x+4\right)\)
1 He is going to buy a new car
2 They are going to write a letter to thank him
3 I am going to visit Ha Long Bay
4 He is going to stop smoking
5 Linh is going to be a doctor
6 We are going to build a garage
7 She is going to clean the windows
8 They are going to invite lots of people
9 You are going to get wet
10 I am going to be sick
1 Where are you going
2 Who did you go with
3 Do I know
4 What does she look like
5 How old is she
6 Do you want