Answer: I will try my best to help, just let me know if this is wrong.
Step-by-step explanation: Subtraction and Addition are related to one another in the way that they both change the initial value of a particular number, by acting upon it with another number. Subtracting something and Adding something both end in the overall decrease or increase (change in value) of a number. Sorry if this didn't help, but if its due tomorrow I at least wanna try.
