A 9 4 6 b 7 4 July 8, 2019 16 32 64 128 A 9 4 6 b 7 4 answer A 3 4 b 6 7 c 9 4 d 6 1 9 6b+(7-0 4b) 9 - a = 4 4/a + 7/b (a + 4 6) - (а + 9 8)