B 2 5 7 July 8, 2019 16 32 64 128 Б 2 75 5 B = 2 3 5 7 2 b 1 )- 7 5 A 1 1 2 b 5 7 6 9b 1 5 * b 2 7 7b 5 b 2 7.1 5 b 2 airbag 2 b 5 )+ 7b 4 B 5 2 74 B 2 7 5 6 B = 2 3 5 7 11 2 b − 7 5 9 If a 1 2 b 5 7 2 7 b 5 7 on a number line Cho a =(- 1 2 b =( 5 7