In the image, the balance scale represents an equation. Let's break down the model and translate it into a mathematical equation:

Left Side of the Scale:

• There are 2 blocks labeled "x" and 3 single units (which represent +3).

Right Side of the Scale:

• There is 1 block labeled "x" and 3 single units (which represent +3).

Equation Setup:

Based on the balance scale, the total weight on both sides must be equal, so the equation represented by this model can be written as:

$2x + 3 = 1x + 3$

Simplifying the Equation:

We can simplify this equation by subtracting $x$ and 3 from both sides:

$2x + 3 = x + 3$

1. Subtract 3 from both sides: $2x = x$

2. Subtract $x$ from both sides: $x = 0$

Conclusion:

The value of $x$ is 0. Therefore, the correct answer to Part 2 is D: $x = 0$.

Would you like further clarification on this solution or any other details?

Here are 5 related questions to deepen your understanding:

1. What happens if we change the number of single units on either side?
2. How would the equation change if there were 3 blocks of $x$ on the right side?
3. Can you solve the equation by adding different values of $x$ first?
4. What type of equations can be represented using this balance model?
5. How does subtracting or adding equal values to both sides affect the balance?

Tip: Always isolate the variable step by step to simplify solving the equation.