на английском мой брат учится в четвёртом классе

Great! I can help in English, at a 4th-grade level, with detailed, step-by-step explanations.

Here's how I’ll work once you send a task:

• Goal: Understand → I’ll give a clear, step-by-step solution with simple explanations.
• Subject/Class: If you specify, I’ll adjust the language and difficulty to match it. If not, I’ll use a general middle-school approach suitable for a 4th grader.
• Missing parameters: I won’t rely on any unprovided subject or class details.

What I need from you:

• Please paste the problem as text or share the image of the task.
• If you have any preferences (e.g., want more practice with a particular topic, or prefer shorter summaries), tell me and I’ll tailor the response.

If you’d like, I can also provide a quick example format now so you know what to expect:

• Problem: [text or image]
• Step-by-step solution:
  1. Understand the problem
  2. Plan the steps
  3. Carry out each step with explanations
  4. Check the answer
• Final answer with a brief summary of the key idea

Please share the actual problem, and I’ll start solving it in English right away.