Question

Answer 1

a) x + 8,5 = 21,7

           x   = 21,7 - 8,5

           x   = 13,2

vậy x =...

b) \(\dfrac{3}{5}x-\dfrac{1}{3}=\dfrac{4}{3}\)

    \(\dfrac{3}{5}x=\dfrac{4}{3}+\dfrac{1}{3}\)

    \(\dfrac{3}{5}x=\dfrac{5}{3}\)

       \(x=\dfrac{5}{3}:\dfrac{3}{5}\)

       \(x=\dfrac{25}{9}\)

vậy x =....

Answer 2

a, \(x=21,7-8,5=13,2\)

b, \(\dfrac{3x}{5}=\dfrac{4}{3}+\dfrac{1}{3}=\dfrac{5}{3}\Rightarrow x=\dfrac{5}{3}:\dfrac{3}{5}=\dfrac{25}{9}\)