Can someone explain how to subtract real numbers please?
you mean like 2-1 ??
say you have 2 eges and you cook one for breckfast how many do you have left? the answer is 1
you realy would need some one, maybe you teacher, to walk you through it. it is to hard to explane over the internet.
if you do not mean like 2-1 then exuse me and please tell me what you mean
To answer this we need to answer what is a real number?
The first person to define this was Cauchy. The idea is that a real number can be tought of a rational number as close to it. This concept is called Cauchy sequence. It is definied in terms of equivalance classes. Furthermore, one this is definied it is easy to well-define addition and multiplication.