Question

Find all positive solutions for the equation.

x  is equivalent to  3 (mod 7)

{ 3, 6, 9, ... }

{ 3, 10, 17, ... }

{ 1, 17, 24, ... }

{ 10, 17, 84, ... }

Answer 1

????????? "3 mod 7" ????????

?????? yu want numbers so wen divide bi 3, the leftover=7 ???????????

such numbers=(3*1)+7

(3*2)+7

(3*3)+7

(3*4)+7

.....(3*n)+7

????????? or maebee yu wanna divide bi 7 & get leftover=3 ????????????