Пошаговое объяснение:
b-c-(c-1.2) = b-c-c+1.2 = b-2c+1.2
- 13ц7/11-2*9,4+1,2=13ц7/11-18,8+1,2=13ц7/11 - 17ц6/10 = 13ц7/11 - 17ц3/5 = 13ц35/55 - 17ц33/55 = 13ц35/55 - 16ц88/55 = -6ц53/55
1) 732:6=122
2)800-122=678
3)678:2=339
4) 532:2=266
5)266-186=80
6)80*9=720
1) 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
увеличенные на 10
20, 21, 22, 23, 24, 25, 26,27, 28, 29
2) 7, 8, 9
уменьшенные на 7
0, 1, 2
<span>(999/9) -99/9 =100 вроде так
</span>еще
<span>((99*9)+9)/9+(9-9)=100
</span><span>(9/9+9) + ((9/9+9)*9)=100 </span>