Question

variables review find x if3x+7=20

Answer 1

You have the following equation given in the exercise:

$3x+7=20​$

You need to solve for "x" in order to find its value. To do this, you can follow the steps shown below:

1. You need to apply the Subtraction property of equality by subtracting 7 from both sides of the equation:

$\begin{gathered} 3x+7-(7)=20​-(7) \\ 3x=13 \end{gathered}$

2. Finally, you can apply the Division property of equality by dividing both sides of the equation by 3. Therefore, you get the following result:

$\begin{gathered} \frac{3x}{3}=\frac{13}{3} \\ \\ x\approx4.33 \end{gathered}$

The answer is:

$x\approx4.33$