解析题目

以下是从文档中提取的问题及其详细解析：

1. Solve the equation: $2x + 3 = 7$ Solution: $2x + 3 = 7 \implies 2x = 7 - 3 \implies 2x = 4 \implies x = \frac{4}{2} \implies x = 2$ Therefore, the solution is $x = 2$.

2. **Evaluate