https://file.aiquickdraw.com/mathbot/file/1726889597293f3h0098b.jpg

To solve this problem, let's break it down step by step.

The problem states that both sides of the desk have the same number of counters, but some counters are hidden in the envelope. We need to write an equation to figure out how many counters are in the envelope.

From the image:

- On the left side of the desk, we see **3 counters** visible and an envelope, which represents an unknown number of counters, say **x**.
- On the right side of the desk, there are **5 counters** visible.

Since both sides have the same number of counters, the equation would be:

\[
x + 3 = 5
\]

Now, to solve for \(x\):

\[
x = 5 - 3 = 2
\]

So, there are **2 counters** inside the envelope.

Would you like more details or have any questions?

Here are 5 related questions:
1. How do we know that the number of counters is the same on both sides?
2. How can we generalize this problem to larger numbers of counters?
3. What if there were additional envelopes on both sides with unknown counters?
4. How does solving for \(x\) change if the equation involves negative numbers?
5. Can we solve this type of equation using a visual approach for other shapes or objects?

**Tip**: When solving equations with unknowns, always focus on isolating the unknown variable by performing inverse operations.

Suppose a desk has an imaginary line dividing it in half. Both sides of the desk have the same number of counters, but some counters are hidden in the envelope. Can you tell how many counters are in the envelope? Write an equation modeled by the envelopes and counters, and then solve the equation to determine how many counters are in the envelope.

Learn how to solve an algebraic equation where the number of hidden counters in an envelope is unknown. The problem uses simple algebraic concepts and requires balancing both sides of an equation. Suitable for Grades 4-6.

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