1) 353/360 - 113/160 = 353/360 - 339/360 = 14/360 = 4/90
2) 211/225 - 101/135 = 1899/2025 - 1515/2025 = 384/2025
ОЗ: 2025
3) 26*3+1= 79/3
4) 75*4/27= 300/27 = 100/9
5) 79/3 / 100/9 = 79*9/3*100 = 79*3/100 = 2,37
6) 4/90*384/2025 = 1536/182250
7) 1536/182250 - 2,37 = - 2,361572016