Tolong di jawab dong

1. 7500-4000+1900 = 3500-1900 = 1100
2. 465 x 95 : 5 = 465 x 19 = 8835
3. 1000 + (100 : 4) – 250 = 1000 + 25 -250 = 775
4. 3 x (40-12) : 14 = 3 x 28 : 14 = 3 x 2 = 6
5. 3/4 = 0,75
6. 2/5 x 100% = 40%