Question

Find congruent solutions of `155-=7` (mod 4).

Answer 1

Since, `((155-7)/(4)=(148)/(4)=37)`
and `a=155, b=7, m=4`
`therefore lambda=(a-b)/(4)=(155-7)/(4)=(148)/(4)` [here, a=155, b=7]
= 37 (integer)