The phrase "are needed to solve" is correct and usable in written English.
It can be used when discussing requirements or necessities for resolving a problem or completing a task.
Example: "The resources and tools are needed to solve the complex equation effectively."
Alternatives: "are required to resolve" or "are essential for solving".
What steps are needed to solve the plastics problem?
Therefore, some special strategies are needed to solve these issues.
That is why special regularizing methods are needed to solve them.
Despite the robot limited sensing ranges, no switchings are needed to solve the collision avoidance problem.
Because the discrete NLCB scheme is algebraically nonlinear, special iterative methods are needed to solve it efficiently.
Government interventions are needed to solve these problems, yet few quantitative models are available to guide the design of related public policies.
that are needed to solve these intelligence test problems and serve as a proof-of-concept for evaluation in other developmental problems.
Here is the good news: the bold steps that are needed to solve the climate crisis are exactly the same steps that ought to be taken in order to solve the economic crisis and the energy security crisis.
Contributors to this series describe humanities, arts, and social science research that generates social innovation, and share ideas for cultivating the multi-disciplinary and sociotechnical collaborations that are needed to solve the major civilizational issues of our time.
After repeating this process several times (it turns out that three iterations are needed to solve the puzzle), we reach a state where all values are either zero or positive.
As the low Earth orbit is not a limitless resource, some sort of debris mitigation measures are needed to solve the problem of unusable satellites and spent upper stages.
