Question

who illustrated x+(-x=0

Answer 1

x+(-x)=0
x - x =0

any number minus itself is zero

Answer 2

logic illustrates it

Answer 3

that is "what"

Answer 4

I didn't know that this particular thing has an author...

Answer 5

It has no "author", it is a given property of all real-numbers.

Answer 6

oops clicked something, don't know what.
I was just reading from the user's question. Based on it, x+(-x) has some sort of an author.

Answer 7

well, doesn't matter so much to me. bye

Answer 8

Property of opposites: a + (-a) = 0.

Answer 9

we need it to talk about negative numbers :-)

Answer 10

a + (-a) = 0 is a direct logical consequence of the reflexive property of equality: a = a.