Question

3/8 x a = 4/7                                 1/7 : a = 1/3

tìm a hộ mình, làm đầy đr hộ mình nha

Answer 1

a=32/21

a=7/3

Answer 2

\(\frac{3}{8}\)\(\times a=\frac{4}{7}\)      

             \(a=\frac{4}{7}\)\(\div\frac{3}{8}\)

             \(a=\frac{32}{21}\)

\(\frac{1}{7}\)\(\div a=\frac{1}{3}\)

              \(a=\frac{1}{7}\)\(\div\frac{1}{3}\)

             \(a=\frac{3}{7}\)

Chúc bạn hok tốt ^_^ !

Answer 3

\(\frac{3}{8}\times a=\frac{4}{7}\)

\(a=\frac{4}{7}\div\frac{3}{8}\)

\(a=\frac{32}{21}\)

\(\frac{1}{7}\div a=\frac{1}{3}\)

\(a=\frac{1}{7}\div\frac{1}{3}\)

\(a=\frac{3}{7}\)

Answer 4

\(\frac{3}{8}.a=\frac{4}{7}\)

<=>\(a=\frac{4}{7}:\frac{3}{8}\)

<=>\(a=\frac{32}{21}\)

 \(\frac{1}{7}:a=\frac{1}{3}\)

<=>\(a=\frac{1}{7}:\frac{1}{3}\)

<=>\(a=\frac{3}{7}\)

Answer 5

a) 3 / 8 x a = 4/7 

<=>a           = 4 / 7 : 3/8

<=> a           = 32/21

Vậy a = 32/21

b)   1/7 : a = 1/3

<=> a           = 1/7 : 1/3

<=> a           = 3/7

Vậy a = 3/7

Answer 6

3/8 x a =4/7

a = 4/7 : 3/8

a = 4/7 x 8/3

a = 32/21

                  1/7 : a = 1/3

                          a = 1/3 x 1/7

                          a = 1/21

Answer 7

3/8 x a = 4/7

a=4/7:3/8

a=32/21

1/7:a=1/3

a=1/7:1/3

a=7/3

Answer 8

3/8xa=4/7                                                  1/7:a = 1/3

a=4/7:3/8                                                   a=1/3:1/7

a=32/21                                                     a=7/3

chúc bn học tốt

Answer 9

\(\frac{3}{8}.a=\frac{4}{7}\)                                                         \(\frac{1}{7}:a=\frac{1}{3}\)

\(\Leftrightarrow a=\frac{4}{7}:\frac{3}{8}\)                                                  \(\Leftrightarrow a=\frac{1}{7}:\frac{1}{3}\)

\(\Leftrightarrow a=\frac{4}{7}.\frac{8}{3}\)                                                  \(\Leftrightarrow a=\frac{1}{7}.3\)

\(\Leftrightarrow a=\frac{32}{21}\)                                                        \(\Leftrightarrow a=\frac{3}{7}\)

Answer 10

3/8 x a = 4/7                        1/7 : a = 1/3

a = 4/7 : 3/8                         a = 1/7 :1/3

a = 4/7 x 8/3                        a = 1/7 x 3

a = 32/21                             a = 3/7

# HỌC TỐT

Answer 11

 a3/8 * a = 4/7

           a=  4/7: 3/8 

           a=32/21

b 1/7 : a = 1/3 

           a= 1/7 :1/3

           a= 3/7

Answer 12

\(\frac{3}{8}\times a=\frac{4}{7}\)

            \(a=\frac{4}{7}\div\frac{3}{8}\)

             \(a=\frac{32}{21}\)

\(\frac{1}{7}\div a=\frac{1}{3}\)

            \(a=\frac{1}{7}\div\frac{1}{3}\)

            \(a=\frac{3}{7}\)

Answer 13

thanks

Answer 14

Trả lời:

\(a,\)\(\frac{3}{8}.a=\frac{4}{7}\)

\(\Leftrightarrow a=\frac{4}{7}:\frac{3}{8}\)

\(\Leftrightarrow a=\frac{4}{7}.\frac{8}{3}\)

\(\Leftrightarrow a=\frac{32}{21}\)

Vậy\(a=\frac{32}{21}\)

\(b,\)\(\frac{1}{7}:a=\frac{1}{3}\)

\(\Leftrightarrow a=\frac{1}{7}:\frac{1}{3}\)

\(\Leftrightarrow a=\frac{1}{7}.3\)

\(\Leftrightarrow a=\frac{3}{7}\)

Vậy\(a=\frac{3}{7}\)

Hok tốt!

Good girl

Answer 15

\(\frac{3}{8}\times a=\frac{4}{7}\)

\(a=\frac{4}{7}:\frac{3}{8}\)

\(a=\frac{4}{7}\times\frac{8}{3}\)

\(a=\frac{32}{21}\)