Answer:
![x=9](https://img.qammunity.org/2020/formulas/mathematics/high-school/efewhbjjjekkboelnux17ek1wspv8vzweu.png)
Explanation:
Given the equation
, you need solve for the variable "x", to do this, you need to remember the Addition property of equality, which states that:
![If\ a=b,\ then\ a+c=b+c](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1ydzt68hf8slglo5kfmr034mfqg9d78hw3.png)
Therefore, add 2 to both sides of the equation to calculate the value of the variable "x", then you get the following result:
![x-2+(2)=7+(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7eqa4aaydimhva687ya3nwcobqzqxlhetw.png)
![x=9](https://img.qammunity.org/2020/formulas/mathematics/high-school/efewhbjjjekkboelnux17ek1wspv8vzweu.png)