а)40800×(3500:70):100-328×60= 40800×50:100 - 19680= 2040000:100 - 19680= 20400 - 19680= 720
б)1321+(1600-600×2550:1000)×8097= 1321 + (1600-600×2.55)×8097= 1321 + (1600-1530)×8097= 1321 + 70×8097= 1321 + 566790= 568111
а)
40800×(3500:70):100-328×60
= 40800×50:100 - 19680
= 2040000:100 - 19680
= 20400 - 19680
= 720
б)
1321+(1600-600×2550:1000)×8097
= 1321 + (1600-600×2.55)×8097
= 1321 + (1600-1530)×8097
= 1321 + 70×8097
= 1321 + 566790
= 568111