Rewrite 3 - (-4) as an addition problem.

3+4

Step-by-step explanation:

When we subtract a negative, we can change it to addition

3 - (-4)

3+4

Answer: + 7

Step-by-step explanation: When you're adding and subtracting positives and negatives and you a minus a negative in a problem, you can change it to plus a positive.

So 3 - (-4) can be thought of as 3 + (+4).

If you wanted to solve, just add and you end up with + 7.