а) 7 * 32 - 7 * 23 = 7 * (32 - 23) = 7 * 9 = 63
б) 9 * 31 - 9 * 71 = 9 * (31 - 71) = 9 * (- 40) = - 360
в) 27 * 3 - 7 * 3 = 3 * (27 - 7) = 3 * 20 = 60
г) 71 * 17 - 17 * 11 = 17 * (71 - 11) = 17 * 60 = 1 020
а) 7 * 32 - 7 * 23 = 7 * (32 - 23) = 7 * 9 = 63
б) 9 * 31 - 9 * 71 = 9 * (31 - 71) = 9 * (- 40) = - 360
в) 27 * 3 - 7 * 3 = 3 * (27 - 7) = 3 * 20 = 60
г) 71 * 17 - 17 * 11 = 17 * (71 - 11) = 17 * 60 = 1 020