You're viewing a single thread.
View all comments
11
comments
This works for all numbers ending in 9:
x*9+x+9=x(9+1)+9
=10x+9
45 0 ReplyIt makes sense, it's basically always 10*x+9.
10 0 ReplyDoesn't make much sense for negative values of X, nor decimal numbers.
1 1 ReplyThen simply change the statement to say for any whole number X
1 0 Reply
You've viewed 11 comments.
Scroll to top