Let
x ----> the number
we have that
[tex]\frac{5}{7}+\frac{7}{5}+x=3[/tex]Solve for x
[tex]x=3-(\frac{5}{7}+\frac{7}{5})[/tex][tex]\begin{gathered} x=3-(\frac{5*5+7*7}{35}) \\ x=3-(\frac{74}{35}) \end{gathered}[/tex][tex]\begin{gathered} x=(\frac{35*3-74}{35}) \\ \\ x=\frac{31}{35} \end{gathered}[/tex]therefore
