Answer:
5
Explanation:
First calculate the result of subtraction and addition:
![3-5+7=-2+7=5](https://img.qammunity.org/2020/formulas/mathematics/high-school/uhne1l2hxy95xqlv1bhnq4byt5fo7yutah.png)
Now, find the absolute value of the expression
![|3-5+7|](https://img.qammunity.org/2020/formulas/mathematics/high-school/o18duwhc67os4jlwzezqw5mzzf7nvtrr9n.png)
Since the expression
is equivalent to 5, their absolute values are the same.
![|3-5+7|=|5|=5](https://img.qammunity.org/2020/formulas/mathematics/high-school/9ysk5ofvxtjczmdeulc590gu15djvcu7hk.png)
Note that absolute value of a positive number is exactly this positive number