Пошаговое объяснение:
1) 7/4х5/3+11/6х9/2=(7х5)/(4х3)+(11х9)/(6х2)=35/12+99/12=134/12=11 2/12=11 1/6
2) 3\4*5\8+11\6*8\3-7\8*1\3= (3х5)/(4х8)+(11х8)/(6х3)-(7х1)/(8х3)=
15/32+88/18-7/24,= (270+2816)/576-7/24=3086/576-7/24=(3086-(7х24))/576=
(3086-168)/576=2918/576= 5 38/576= 5 19/288
Пошаговое объяснение:
1) 7/4х5/3+11/6х9/2=(7х5)/(4х3)+(11х9)/(6х2)=35/12+99/12=134/12=11 2/12=11 1/6
2) 3\4*5\8+11\6*8\3-7\8*1\3= (3х5)/(4х8)+(11х8)/(6х3)-(7х1)/(8х3)=
15/32+88/18-7/24,= (270+2816)/576-7/24=3086/576-7/24=(3086-(7х24))/576=
(3086-168)/576=2918/576= 5 38/576= 5 19/288