Ответ:
98 157/190
Пошаговое объяснение:
100 7/10 + 2 3/19 - 4 3/95 = 100 7/10 + (2 15/95 - 4 3/95) = 100 7/10 - 1 83/95 = 98 157/190
1)1,2-1 7/15= 1 2/10 - 1 7/15 = 6/5 - 22/15 = <span>(6 × 3 - 22 × 1)/15 = 18/15 - 22/15 = - 4/15
2) </span>- 4/15 × ( - 5/8) = 20/120= 1/6
3) 1 1/6 : 2 1/3 = 7/6 : 7/3 = 7/6 × 3/7 = 1/2
4)1/6 - 1/2 =<span>(1 × 1 - 1 × 3)/6 = 1/6 - 3/6 = - 2/6 = - 1/3
ответ: - 1/3</span>
720048 - <span>98356 = 621692
</span>44809 + 250168 = 294977
621692 - 294977 = 326713
1)240/0,6=400
2)280/0,7=400
...............но не уверена