It is because that is how "plus" is normally defined.
But 1 plus 1 need not be two. It all depends on the domain and range that you are working with and what you mean by the binary operation "plus".
If 1 means make an about turn, and "plus" means "follow it with", then
1 plus 1 is "make an about turn" and then "make an about turn". If you do that you are back where you started. So in this case, 1 plus 1 is the same as zero.
2 9 1 plus 1 is 2.
1/2 plus 1/2 plus 1/4 plus 3/4 is two.
One plus one is Two (1+1=2)
Since half of 2 is 1 then adding 2 to 1 is 3 (1+2=3) In other words 'Half of two plus two is equal to three.' :) Or if (2+2=4) then 1/2 of 4 is 2
One plus two equals three. 1 + 2 = 3
One plus one is two. It can be expressed mathematically as 1+1 = 2.
2/3 + 2/5 = 1 1/15
-2 + 1 = -1
2 1/2 or 2.5
one plus 2 is 3
1/2 + 1/2 + 2/3 = 1 2/3 or one and two thirds.
9A:2 - 1 - 1 + 1 - 1 + 3 - 2 + 6 = 7The answer is seven.