Question

giải đầy đủ giúp mik nhé

Answer 1

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

    \(\dfrac{3}{5}+x=2\)

           \(x=2-\dfrac{3}{5}\)

           \(x=\dfrac{7}{5}\)

b) \(x-\dfrac{3}{2}+\dfrac{5}{4}=\dfrac{9}{2}\)

    \(x-\dfrac{3}{2}=\dfrac{9}{2}-\dfrac{5}{4}\)

   \(x-\dfrac{3}{2}=\dfrac{13}{4}\)

   \(x=\dfrac{13}{4}+\dfrac{3}{2}\)

   \(x=\dfrac{19}{4}\)

c) \(x\div\dfrac{9}{7}=\dfrac{3}{5}\)

   \(x=\dfrac{3}{5}\times\dfrac{9}{7}\)

   \(x=\dfrac{27}{35}\)