What expressions are equivalent to -49 - 49?

Answer 1

-98

Answer 2

There are infinitely many expressions. For example,-48 -50, -47 -51, -46 -52, -45 -53 and so on - forever.

Then look at numbers to 1 decimal place:

-48.9 -49.1, -48.8 - 49.2 and so on.

Then numbers to 2 decimal places, 3 dp, 4 dp, ... infinitely many dp.

Next you can consider triplets of number rather than pairs. And then sets of 4 numbers, 5 numbers and so on to infinitely many numbers - in each case looking at numbers with 0 dp, 1dp, etc.

You can then move on to subtractions, and then multiplications and divisions.

And then there are other operations, for example, log(100/googol).

Answer 3

-98