1) 81:9=9
2) 9*3=27
3) 21*9=189
4) 36:9=4
5) 4*4=16
6) 27+189=216
7) 216+16=232
<span><span> 6203 900
</span><span><u>-5400 </u>6.89(2) </span>
8030<span>
<u>-7200</u></span>
8300<span>
<u>-8100</u></span>
2000<span>
<u>-1800</u></span><span>
200</span></span>
68049
-----------------------------------
<span> Log2(1-x)>3
1-x>8
x<-7
1-x>0
x<1
Ответ(-</span>∞;-7)