Answer:
never
Step-by-step explanation:
if it still works then it is not worthless if its super old then it can be a collectors item
81-1= 80
80 / 2 = 40
D = 40
So:
40(2) = 81 - 1
Answer:
me
Step-by-step explanation:
I am not sure on how to do this however here is a link with information thst will be able to help you around this subject.i hope this helps
https://www.bbc.com/bitesize/guides/z8k887h/revision/1
