Problem: $\frac{\frac{1}{x^2}-\frac{2}{y}}{y-2 X^2} Step 1: $\frac{\frac{y}{x^2 Y}-\frac{2 X^2}{x^2 Y}}{y-2 X^2} Step 2: $\frac{\frac{y-2 X^2}{x^2 Y}}{\frac{y-2 X^2}{1}}$

Problem applies to a question or difficulty calling for a solution or causing concern. Dealing with a moral or social problem: Has financial and emotional problems.

There are nine meanings listed in oed's entry for the noun problem, three of which are labelled obsolete. A problem is a question or puzzle that is intended to be solved or to be deeply thought about. Your teacher may present a problem to the class so you can use what you’ve learned to.

A problem is a situation that is unsatisfactory and causes difficulties for people.