In this video, we provide a clear and concise explanation of selected questions from Math 7, Exercise 1.3. Each part is broken down step by step to help students understand the concepts easily and apply them with confidence. The explanations are supported by simple examples, making it ideal for learners who want to strengthen their basics. Whether you're revising for a test or just need a quick refresher, this video offers helpful guidance in an easy-to-follow format.