Although a valid solution, it also stretched out the flight time.

This assumption will be valid for all but very concentrated solutions.

Such an action is a valid solution to a problem.

Obviously, it's not for everyone but it is quite a valid solution for many.

The only valid solution: national health care with guaranteed universal coverage.

It can be shown that for any instance of the problem, there is at least one valid solution.

A constraint is a condition which must be met by any valid solution to a problem.

Withholding tax is, in my opinion, just as valid a solution.

This can make clear that there are many valid solutions to one particular problem.

I do not think that this is a valid solution.