How is subtraction related to addition?

Addition is you counting up and subtraction you just counting down

Step-by-step explanation:

the sum of two numbers (addition)

the difference of two numbers (subtraction)

look at this, if you are given two numbers to add, you find the product ...

after that you can find one of the given number by subtracting one given number from the product ...

e. g

x+y=z

z-y = x