Answer: y=39
Explanation:
From the given picture, In parallelogram UVWX,
UV=7, WX=7
VW=13
UX=

We know that the opposite sides of a parallelogram are always equal.
So for the given parallelogram UVWX,
UV=WX=7
and UX=VW

To solve for y, multiply 13 on the both sides , we get

Hence, the value of y = 39