а)(64 + 72)/8 = 136 / 8 = 17(36 + 81)/9 = 117 / 9 = 13(63 + 49)/7 = 112 / 7 = 16(45 + 35)/5 = 80 / 5 = 16
б)(54 + 48)/6 = 102 / 6 = 17(42 + 70)/7 = 112 / 7 = 16(72 + 81)/9 = 153 / 9 = 17(56 + 32)/8 = 88 / 8 = 11
а)
(64 + 72)/8 = 136 / 8 = 17
(36 + 81)/9 = 117 / 9 = 13
(63 + 49)/7 = 112 / 7 = 16
(45 + 35)/5 = 80 / 5 = 16
б)
(54 + 48)/6 = 102 / 6 = 17
(42 + 70)/7 = 112 / 7 = 16
(72 + 81)/9 = 153 / 9 = 17
(56 + 32)/8 = 88 / 8 = 11