Of course. When solving practical problems with column equations, it is mainly reflected in solving practical problems, not solving equations. Therefore, when answering such questions in the exam, you don't need to write the detailed process of solving the equation, just set the unknown to list the equation and write the number of solutions of the equation. However, it should be noted that it is necessary to check whether the number of solutions of this equation is the solution of the original equation, whether it meets the meaning of the question, and there should be a test link, and finally answer and give a conclusion deduction.