College

Select the correct answer.

Create and solve a linear equation that represents the model, where circles and a square are shown evenly balanced on a balance beam.

A. [tex]\( x + 7 = 12; \, x = 5 \)[/tex]
B. [tex]\( x + 5 = 7; \, x = 2 \)[/tex]
C. [tex]\( x = 5 + 7; \, x = 12 \)[/tex]
D. [tex]\( x + 7 = 5; \, x = -2 \)[/tex]

Answer :

Let's solve the problem by creating and solving a linear equation.

We are given that there is a balance beam with circles and a square shown evenly balanced. Our task is to create and solve an equation that represents this balance.

From the options provided, let's consider the equation:

[tex]\[ x + 7 = 12 \][/tex]

This equation suggests that the weight of one side, represented by [tex]\( x + 7 \)[/tex], is equal to the weight on the other side, which is 12.

To find the value of [tex]\( x \)[/tex], we need to solve the equation:

1. Start with the equation:
[tex]\[ x + 7 = 12 \][/tex]

2. To isolate [tex]\( x \)[/tex], subtract 7 from both sides of the equation:
[tex]\[ x + 7 - 7 = 12 - 7 \][/tex]

3. Simplifying both sides gives us:
[tex]\[ x = 5 \][/tex]

Therefore, the solution to the equation is [tex]\( x = 5 \)[/tex]. This indicates the value where the balance is perfectly maintained on both sides of the equation.