Answer:
The answer would be -3/10. Therefore, the only timeline that has -7/10, 4/10 and -3/10 is the first one.
Explanation:
The answer to the problem is -3/10, as -7 + 4 is -3, and the 10 stays the same. The first timeline accommodates all of the numbers well, and you can see how you get the answer. Hope this helps!