Answer:
![Expression = 7 + x + 5](https://img.qammunity.org/2021/formulas/mathematics/college/sgf9dzeuj0zzyz1u69xyzzcdd65uvsyx9h.png)
![Simplified = 12 + x](https://img.qammunity.org/2021/formulas/mathematics/college/ci26n45be2cb3zm8a8oqv7ut0am29v9a28.png)
Explanation:
Required:
Write as an expression and simplify
The sum of a number, x and 5 can be represented as: x + 5
So, the expression becomes: 7 + x + 5
![Expression = 7 + x + 5](https://img.qammunity.org/2021/formulas/mathematics/college/sgf9dzeuj0zzyz1u69xyzzcdd65uvsyx9h.png)
Solving further:
Collect Like terms
![Expression = 7 + 5 + x](https://img.qammunity.org/2021/formulas/mathematics/college/4eosd7czpm8a5ejk3g6xe6thnxnn9exh7b.png)
Add like terms
![Expression = 12 + x](https://img.qammunity.org/2021/formulas/mathematics/college/jhzjz8liw64ibfbl3d2d82eqb5973zqi5n.png)
Hence, the simplified expression is: 12 + x