explain 9-(-4) — step-by-step solution

Let's calculate:

9 - (-4)

ⓘ Subtract a negative number by adding its opposite: the two minus signs become a plus:

- (-4)

4

9 + 4

ⓘ Start from

9

and move forward

4

on the number line:

9 + 4

13

▶Result:

13

⊕