1) | а - 4 | = 5 2) 1,2а = -7,2 Плееез)))))
|a - 4| = 5 1) a - 4 = 5 ===> a = 9 2) a - 4 = -5 ===> a = -1 2) 1.2a = -7.2 a = -7.2 / 1.2 a = -6