Solving equations is a common mathematical problem. Usually, when solving an equation, a colon is used after the solution. This colon is used to indicate that the next content is an explanation or explanation of the previous content. By using colons, the process and result of solving equations can be clearly expressed, which makes the process of solving problems more clear and understandable.
At the same time, colons can also help distinguish the steps of solving problems from the final answer, making the whole problem-solving process more organized. Therefore, in mathematics, using colons is a common problem-solving habit.