Answer:
[tex]p=5[/tex]
Step-by-step explanation:
we know that
In a parallelogram opposite sides are parallel and congruent
so
[tex]AB=CD[/tex]
substitute the given values
[tex]11p-24=2p+21[/tex]
solve for p
[tex]11p-2p=21+24[/tex]
[tex]9p=45[/tex]
[tex]p=5[/tex]
