NYM- Here's the scenario that I think you're trying to answer:

A plane is standing on a runway that can move (like a giant conveyor belt). This conveyor has a control system that tracks the plane's speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction). There's also a giant fan at the far end of the runway that blows a headwind at the plane in exactly the same amount of thrust the engines provide.

Will the plane be able to take off?

The answer to this is yes, but it won't have a "viable flight" because the plane won't be able to make any forward progress; the giant fan is always blowing a headwind that prevents the engine thrust from moving the plane forward.