What is the solution to 7x = 21?

What is the solution to 7x = 21?

• A. 2
• B. 3
• C. 4
• D. 5

Answer: (B)

To find the solution to the equation \(7x = 21\), you want to isolate the variable \(x\). This can be done by dividing both sides of the equation by 7. Doing this step-by-step looks like this: 1. Start with the equation: \(7x = 21\). 2. Divide both sides of the equation by 7: \[ \frac{7x}{7} = \frac{21}{7} \] 3. Simplifying both sides gives: \[ x = 3 \] This means the solution to the equation \(7x = 21\) is \(x = 3\). Therefore, option B is the correct answer, as it correctly reflects the value of \(x\) that satisfies the original equation.

To find the solution to the equation (7x = 21), you want to isolate the variable (x). This can be done by dividing both sides of the equation by 7. Doing this step-by-step looks like this:

1. Start with the equation: (7x = 21).

2. Divide both sides of the equation by 7:

[

\frac{7x}{7} = \frac{21}{7}

]

3. Simplifying both sides gives:

[

x = 3

]

This means the solution to the equation (7x = 21) is (x = 3). Therefore, option B is the correct answer, as it correctly reflects the value of (x) that satisfies the original equation.