From the given rhombus, it is seen that
AB=5x+25
CD=7x-1
It is known that the lengths of all sides of a rhombus are equal.
Therefore, it is obvious that
AB=CD
It follows that
[tex]\begin{gathered} 5x+25=7x-1 \\ 7x-5x=25+1 \\ 2x=26 \\ x=13 \end{gathered}[/tex]
Hence, the value of x is 13
