How much is zero worth?

Answer 1

Zero is the value of nothing. Zero holds an absence of value in an equation

So that's it? I still disagree.

Although zero may signify"nothing", its worth is not.

The concept of zero is invaluable in mathematics.

Early number systems did not have a zero - what's the Roman numeral for zero, for example? Many also lacked place value, a concept for which a zero is necessary.

I doubt the question was asked for the obvious answer, but to encourage some thinking about the real value of having a zero in our number system.