1. Problem: Solve the equation or expression given by the user. Since the user only wrote "Rijesi" (which means "Solve" in Croatian), but did not provide a specific equation, I will explain the general approach to solving algebraic equations. 2. Formula and rules: To solve an algebraic equation, we aim to isolate the variable on one side of the equation. Common steps include: - Simplify both sides by expanding parentheses and combining like terms. - Use inverse operations to move terms from one side to the other. - Divide or multiply to solve for the variable. - Check the solution by substituting back into the original equation. 3. Example: Solve $2x + 3 = 7$ - Subtract 3 from both sides: $2x + 3 - 3 = 7 - 3$ which simplifies to $2x = 4$ - Divide both sides by 2: $\frac{2x}{2} = \frac{4}{2}$ which simplifies to $x = 2$ 4. Explanation: We used inverse operations to isolate $x$. Subtracting 3 cancels the +3, and dividing by 2 cancels the multiplication by 2. Since no specific problem was given, this general explanation should help with solving equations.