The angles in a triangle are equal to 180 degrees
Keeping in mind alternate angles are always equal we can say that ∠TVU=∠VTS
So we can find ∠TVU which is equal to

In order to find the angle we need the value of x

Simplify

Isolate x

Now that we have the value of x we can substitute in


With ∠TVU being 61 degrees, ∠VTS is also 61 degrees as they are alternate angles
Hope this helps :)
If you need further help, just let me know, I would be happy to help :)