need to know the answer to that question. that is a question on my homework and i don't know the answer and can't find it in my math book
Math is timeless in a way; the symbols have been used in various eras and with various languages but the symbols remain.
Sometimes in order to explain what we have said a symbol does (like a + sign means add the first part to the second part) you would end up with a novel instead of a single sheet of paper.
Math has a lot of abstract and theoretical concepts. If we didn’t come up with the idea of variables (substitute what you don’t know right now or what could change with a ‘ x ’) how could we get to our theoretical answer?
There has to be more that can be said beyond these concepts, but I think this is a good start.