Modulo properties doubt

#1

i didn’t understand b^-1 i.e multiplicate modulo inverse
plz explain this

#2

Hi tarandeep
Consider we need to find multiplicative modulo inverse of b i.e b^-1:
This means (b * y)%m should be equal to 1.
Now let us say b=6 and m=7
=> (6 * y)%7=1
=> y=6 ans 6*6=36 and 36%7=1
Here y(=6) is the modulo inverse of b(=6) w.r.t m(=7)