Use the number line to find $4+(-7)$.

Step 1 ：Use the number line to find $4+(-7)$.

Step 2 ：The question is asking to find the sum of 4 and -7. This can be done by simply adding the two numbers together.

Step 3 ：The result is -3.

Step 4 ：Final Answer: The sum of 4 and -7 is \(\boxed{-3}\).