а) 12000/ (1270 -1267) =12000/3= 4000
б) 1500/5 + 9070 = 300 + 9070 = 9370
в) (1028 + 679)- 789 = 1707 -789 = 918
а) 12000/ (1270 -1267) =12000/3= 4000
б) 1500/5 + 9070 = 300 + 9070 = 9370
в) (1028 + 679)- 789 = 1707 -789 = 918