Пошаговое объяснение:
1) (-41/5 ·21/7)·1/18=-41/5 ·7/7 ·1/6=-41/30=-1 11/30
2) -(-2 5/12 ·1 1/29)·4/35=29/12 ·30/29 ·4/35=30/12 ·4/35=6/(3·7)=2/7
3) (2/7 ·31/2)·4=(31·4)/7=124/7=17 5/7
4) (-56/7 ·11/41)·(-41/3)=(8·11)/3=88/3=29 1/3
Пошаговое объяснение:
1) (-41/5 ·21/7)·1/18=-41/5 ·7/7 ·1/6=-41/30=-1 11/30
2) -(-2 5/12 ·1 1/29)·4/35=29/12 ·30/29 ·4/35=30/12 ·4/35=6/(3·7)=2/7
3) (2/7 ·31/2)·4=(31·4)/7=124/7=17 5/7
4) (-56/7 ·11/41)·(-41/3)=(8·11)/3=88/3=29 1/3