Rewrite each expression as an addition problem. “Adding the Opposite” 9−4=

4−9 =

9−(-4)=

-9−(-4) =

-9−4=

4−(-9) =

-4−(-9) =

-4−9 =

9 + (-4)

4 + (-9)

9 + 4

4 + (-9) [Switched numbers around so it would be easier to see]

-9 + (-4)

4 + 9

-4 + 9

-4 + (-9)

Step-by-step explanation:

Basically for all of them you replace the subtraction symbol with an addition symbol and put the subtraction symbol inside of the parentheses along with the value you are given.

The answer would be A

Step-by-step explanation:

If you add the positive numbers in answer a you get the sum of 18. Then add the negative numbers in answer A getting the answer 18. 18-18 equals zero