Пошаговое объяснение:
4) = 1 93/97 × 1 47/50 : 5 7/10= 190/97 × 97/50 : 57/10 = 190/97 × 97/50 × 10/57 = (190×97×10)/(97×50×57)=190/(5×57)=38/57
6) = (90/77)×1 31/35×2 13/18= 90/77 × 66/35 × 49/18 = (90×66×49)/(77×35×18) = 90/(5×3)=90/35=2 20/35=2 4/7
Пошаговое объяснение:
4) = 1 93/97 × 1 47/50 : 5 7/10= 190/97 × 97/50 : 57/10 = 190/97 × 97/50 × 10/57 = (190×97×10)/(97×50×57)=190/(5×57)=38/57
6) = (90/77)×1 31/35×2 13/18= 90/77 × 66/35 × 49/18 = (90×66×49)/(77×35×18) = 90/(5×3)=90/35=2 20/35=2 4/7