Question

How would we add -3 + (-9) on the number line?

Answer 1

when you are adding a positive number we would go right but -9 isn’t a positive it’s a negative so we would go left on the number line

Answer 2

-12

Explanation:

1. Create an Equation

-3-9

2. Solve

-3-9 <=== subtract -3 and -9 together to get your answer

-12

3. Check

-12+3 <=== create this equation or this one ===> -12+9 to check if we calculated correctly

-12+3= -9 -12+9= -3

this shows the answer is corrrect