Question

a ) 3 / 5 x x = 4 / 7

b ) 1 / 8 : x = 1 / 5

giúp mình với

Answer 1

a) \(\dfrac{3}{5}\times x=\dfrac{4}{7}\)

            \(x=\dfrac{4}{7}\div\dfrac{3}{5}\)

            \(x=\dfrac{20}{21}\)

b) \(\dfrac{1}{8}\div x=\dfrac{1}{5}\)

           \(x=\dfrac{1}{8}\div\dfrac{1}{5}\)

          \(x=\dfrac{5}{8}\)

Answer 2

20/21

5/8

Answer 3

20/21

5/8

Answer 4

20/21

5/8

Answer 5

20\21
5\8