Sentence examples for difficult to solve from inspiring English sources

The problem was too difficult to solve.

Generally, they are very difficult to solve.

Such systems are often difficult to solve.

They are difficult to solve exactly.

That's what makes it very difficult to solve the problem.

This simple problem is surprisingly difficult to solve.

The problem of displaced persons is particularly difficult to solve.

The problem is stiff and difficult to solve.

In general, it is difficult to solve these coupled HJIs.

The problem is easy to state but difficult to solve.

The affordability conundrum is now far more difficult to solve without the real estate bubble bursting.