Question

Tìm x :

5 / 4 x X = 3 / 8 + 5 / 12

Answer 1

5 / 4 x X = 3 / 8 + 5 / 12

5 / 4 x X = 19/24

x=19/24:5/4

x=19/30

Answer 2

\(\frac{5}{4}\times x=\frac{3}{8}+\frac{5}{12}\)

\(\Rightarrow\frac{5}{4}\times x=\frac{9}{24}+\frac{10}{24}\)

\(\Rightarrow\frac{5}{4}\times x=\frac{19}{24}\)

\(\Rightarrow x=\frac{19}{24}:\frac{5}{4}\)

\(\Rightarrow x=\frac{19}{24}\cdot\frac{4}{5}=\frac{19}{30}\)

Answer 3

\(\frac{5}{4}\times X=\frac{3}{8}+\frac{5}{12}\)

\(\frac{5}{4}\times X=\frac{9}{24}+\frac{10}{24}\)

\(\frac{5}{4}\times X=\frac{19}{24}\)

           \(X=\frac{19}{24}\div\frac{5}{4}\)

           \(X=\frac{19}{30}\)

Chúc bạn học tốt nha!

Answer 4

  5/4 x X =3/8 + 5/12 

 5/4 x X  =19/24

         X =19/24 : 5/4

         X =19/30