Question

What is the smallest number you should add to 323 make it a multiple of 5​

Answer 1

Step-by-step explanation:

By "it" I assume you mean the result when you subtract your chosen number N from 98, because 98 is not a multiple of 5, and adding or subtracting anything from 98 will not change that fact. The smallest positive number that should be subtracted from 98 to get a multiple of 5 is 3; 98-3 = 95 = 5*19.

But subtracting a negative number from 98 gives a number that is greater than 98. There is no smallest negative number that, when subtracted from 98, yields a multiple of 5, because for any candidate C, the yet-smaller number C - 5 also works.