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} (3x)/(3)=(13)/(3) \\ \\ x\approx4.33 \end{gathered}`

The answer is:

`x\approx4.33`