Tìm x: x-3/4=3/5, x : 1/4=16

a) x  - $\frac{3}{4}$   =         $\frac{3}{5}$                               b) x:$\frac{1}{4}$ = 16      

         x         =  $\frac{5}{3}$+   $\frac{3}{4}$                            x = 16x $\frac{1}{4}$           

        x        =         $\frac{27}{20}$                                   x = 4