How do you use a number line to show hat - 4+3 and 3 + - 4 have the same value

Using a number line

-4 - 3 - 2 - 1 0 1 2 3 4

If you take - 4+3 you would find - 4 and add 3, so you get closer to the positive numbers.

-4+3=-1

If you take 3+-4 you would subtract because when adding a positive to a negative you would ignore the + sign and subtract instead.

3+-4=-1