Question

Can someone please tell me why we write a number as 'difference' in math?

for example, 2x as 5x-3x
why do we need to do that?

Answer 1

We need to do difference so we can have how many numbers differ between the 2 numbers

Explanation:

For example: 5-2=? We want to know what is the difference between the number which is 3 hope I explained it the best I can!!