Question

giúp mình với

 

Answer 1

\(\left(4,5-2x\right).\dfrac{11}{7}=\dfrac{11}{14}\)

\(\Leftrightarrow\dfrac{99}{14}-\dfrac{22}{7}x=\dfrac{11}{14}\)

\(\Leftrightarrow\dfrac{22}{7}x=\dfrac{44}{7}\)

\(\Leftrightarrow x=2\)

Answer 2

   (4,5-2x).11/7=11/4

     4,5-2x        =11/4:11/7

     4,5-2x         = 7/4

            2x        =4,5-7/4

             2x       = 11/4

               x        =11/4:2

                x       =  11/8