Modulo - addtion/subtraction

#1

please tell the following properties:

(a-b)%m = ? (in one situation there will be an extra m)

(a/b)%m = ?

#2

hello @prerak_semwal

(a-b)%m=(a-b+m)%m ( in evry situation this holds)

(a/b)%m= (a * mod inverse of b)%m

u should read about mod arithmetic properties

#3

@aman212yadav
it’s there in video but there prateek bhaiya wrote
(a-b)%m = ( (a%m) - (b%m) +m ) % m
however in a problem he used:
(a-b)%m = ( (a%m) - (b%m) ) %m

On internet I found two other (different) definitions… so I’m confused about subtraction and div.!

#4

its a property u should always add + m in case of subtraction

#5

@aman212yadav
here it says subtraction has same type of formula

.?

#6

this is true->

verify urself from other resources