# So may anyone please explain to me what's subtract means?

thanks alot

##### Junior Member
what's confusing me about subtraction, if I'm on polls number 4 I smashed "analogy" two polls, then I would be on the space between the poll number 2 and poll number 3 .. so it's converse to math which 4-2=2 which I must be on poll number 2

Take a pill Ryan

#### Dr.Peterson

##### Elite Member
Why between two poles? (That's the spelling you want, by the way.)

Here's jumping 3 steps, from #1 to #4:
Code:
o-->o-->o-->o   o   o   o   o   o   o  ... 1 + 3 = 4
Here's jumping back 2 steps from #4:
Code:
o   o<--o<--o   o   o   o   o   o   o  ... 4 - 2 = 2
Now you're at #2.

Who or what is smashed?

#### Otis

##### Junior Member
Hi guys, I'm totally by you guys literally succeed to understand what subtraction is and accumulation and whatever arithmetic of math is. there's just one gap I want to close it and by you guys I would be happy to help me.
once I say "50-25" for instance, am I including 25 or excluding 25 in the answer of "50-25" ?! I mean for example lets say I have like this line ------25--------------50 , then I do 50-25 .. am I excluding the point of 25 in the answer of "50-25"? or doesn't it matter including or excluding the number 25/point where 25 is represented ?! thanks alot

#### HallsofIvy

##### Elite Member
A single point has no size so, in terms of line segment length, it doesn't matter.

If, instead, you have a line of 50 workers and you count off 25 to be sent to another work site, then, if you count off 25 to stay, the remaining workers, numbers 26 to 50, go to the other work site.

There is a distinct difference between "discrete" problems, where you are counting and "continuous" problems where you are measuring.

#### Otis

##### Senior Member
Line up 50 oranges on your kitchen bench. Now take 25 away. How many oranges are left on the bench? Count them.

#### Ryan\$

##### Junior Member
Line up 50 oranges on your kitchen bench. Now take 25 away. How many oranges are left on the bench? Count them.

but that's for specific case .
what I'm claiming for example when I solve problems and arrive to number1-number2 what does that mean? for example lets assume while solving problem I faced 7-5 which it's 2, but how I know that 2 is implying/representing discrete case as you stated in your example above, or continuous ?