1) 4074:42-1259=
First, we calculate 1259 = 708
Then, we divide 4074 by 42 which is 97
Therefore, 4074:42-12*59= 97-708 = -611
2) 3612:12-8225:15=
First, we calculate 3612 divided by 12 which is 301
Then, we multiply 82 by 25 to get 2050
Then, we divide 2050 by 15 to get 136.67
Therefore, 3612:12-8225:15 = 301-136.67 = 164.33
1) 4074:42-1259=
First, we calculate 1259 = 708
Then, we divide 4074 by 42 which is 97
Therefore, 4074:42-12*59= 97-708 = -611
2) 3612:12-8225:15=
First, we calculate 3612 divided by 12 which is 301
Then, we multiply 82 by 25 to get 2050
Then, we divide 2050 by 15 to get 136.67
Therefore, 3612:12-8225:15 = 301-136.67 = 164.33