34m2 =3400 dm2

3400

3400 dm²

= 9738200 dm2

\(Trả\) \(lời:\)

\(97382m^2=9738200dm^2\)

giúp mình đi mọi người

2/3=8/12

5/6=10/12

3/4=9/12

giúp mình đi mọi người ơi

giúp mình đi mọi ngừi

9m

=21 x 3/7=9m

28800

28 800

=28800 dm²

\(\dfrac{1}{2}=\dfrac{6}{12};\dfrac{2}{3}=\dfrac{8}{12};\dfrac{7}{12}=\dfrac{7}{12}\)

Chắc là quy đồng nhỉ :)

\(\dfrac{1\times6}{2\times6}=\dfrac{6}{12};\dfrac{2\times4}{3\times4}=\dfrac{8}{12};\dfrac{7}{12}\)

6/12

8/12

7/12 

\(\dfrac{3}{x}=\dfrac{49}{24}-\dfrac{5}{3}\\ \dfrac{3}{x}=\dfrac{49}{24}-\dfrac{40}{24}\\ \dfrac{3}{x}=\dfrac{3}{8}\\ x=8\)

\(\dfrac{5}{3}+\dfrac{3}{x}=\dfrac{49}{24}\\ \dfrac{3}{x}=\dfrac{49}{24}-\dfrac{5}{3}\\ \dfrac{3}{x}=\dfrac{3}{8}\\ x=8\)

\(\dfrac{4}{5}=\dfrac{12}{15}\\ \dfrac{15}{21}=\dfrac{5}{7}\\ \dfrac{3}{8}=\dfrac{12}{32}\\ \dfrac{36}{24}=\dfrac{6}{4}\)

4/5 = 12/15

15/21 = 5/7

3/8 =12/32

36/24 =6/4

4/5 = 12/15

15/21 = 5/7

3/8 =12/32

36/24 =6/4

\(=\dfrac{10}{15}+\dfrac{6}{15}=\dfrac{16}{15}\)

10/15+6/15

16/15

\(\dfrac{2}{3}+\dfrac{2}{5}=\dfrac{10}{15}+\dfrac{6}{15}=\dfrac{16}{15}\)