この問題を解くの

solving this problem

→ この
phrase Rare #38,012
solving this problem The の nominalizes the verb phrase この問題を解く, turning “solve this problem” into “solving this problem” or “to solve this problem.” It is followed by particles such as は or を, or can stand as the topic of a sentence.
JA: この問題を解くのを手伝ってください。
EN: Please help me solve this problem.

私にはこの問題を解くのは難しい

It's difficult for me to solve this problem.

この問題を解くの私には難しい

This problem is hard for me to solve.

この問題を解くのは難しい

This problem is difficult to solve.

この問題を解くのを手伝っていただけませんか

Could you help me solve this problem?