Hi there!
x = 20 is NOT a solution to this equation.
![(x)/(2) = 40](https://img.qammunity.org/2019/formulas/mathematics/middle-school/h6pun7qnte6ane73a22gantvqh7zqvkokg.png)
In this equation, when we want to find our value of x, we must multiply both sides of the equation by 2. In the current situation our variable x is divided by 2. Therefore, if we want to find its value, we must do the opposite of dividing, which is multiplying.
We end up with the following:
![(x)/(2) * 2 = 40 * 2 \\ x = 80](https://img.qammunity.org/2019/formulas/mathematics/middle-school/4vygy7cnwl8imgl2q8splc4ugl5ng39yoo.png)
Therefore, the only solution to this equation is x = 80 and we can now conclude that x = 20 is NOT a solution to this equation.
~ Hope this helps you!