Answer:
i dont get how this is a math question
and can you post a screenshot so i can understand it better
Step-by-step explanation:
Answer:

Step-by-step explanation:
Simplify:


Group same factor:

Add :

Apply the distributive law: -(a+b) = -a - b


Group same factor:

Subtract:

Add:

Group same factor:

Hence answer = 
<u><em>~lenvy~</em></u>
The child's starting and finishing location is the same, therefore the displacementnis zero.