1) (750+700) : (750-700) = 1450 : 50 = 29
2) (1500*50) - (1500 : 50) = 75000 - 30 = 74970
3) (1000 - 1) : 9 = 111
4) 10000 + 9999 =19999
1) (750+700) : (750-700) = 1450 : 50 = 29
2) (1500*50) - (1500 : 50) = 75000 - 30 = 74970
3) (1000 - 1) : 9 = 111
4) 10000 + 9999 =19999