8. Let T = {-70, -69, -68, ..., -1, 0, 1, ..., 68, 69). a) Which integers are in both T and 7Z? b) Which integers in T have 2 as the remainder in division by 7? c) Which integers in T are also in 3 + 7Z? 1\\ Which intenare n in T catiefun = _1 (mod 7)? 15. Whenever possiblind a solution for each of the following equations in the given Zn. a. [4][x] = [2] in Z6 b. [6][x] = [4] in Z12 c. [6][x] = [4] in Zg d. [10] [x] = [6] in Z12 e. [8][x] = [6] in Z12