1)1/10000
2)10/10000
3)100/10000
1) 8a-56-5a=3a-56
2) -12x-3+12x=-3
3) -b-1.2+3.1b=2.1b-1.2
4) 4.5c+6-4.5c=6
5) -6.3a-4.2+1.4a=-(4.9a+4.2)
6) -a+3+4.2-3.3a+3=-4.3a+10.2
7) 8.3+4.5a-1.5=4.5a+6.8
8) -6.2x+3.1+6.2x+3.2=6.3
6÷7/9=6×9/7=54/7=7 5/7
16÷4/11=16×11/4=44
13÷26/29=13×29/26=29/2=14 1/2
7/9÷5=7/9×1/5=7/45
9/16÷6=9/16×1/6=3/32
1 5/9÷1 8/27=14/9÷35/27=
14/9×27/35=6/5=1 1/5
2 10/13÷3 3/26=36/13÷81/26=
=36/13×26/81=8/9
2 4/7÷1 1/35=18/7÷36/35=
=18/7×35/36=5/2=2 1/2
1) Vл=S/t - Vт = 43,2/2,2 - 1,8 = 17,8
2) t2 = S/(Vл+Vт)= 43,2/(17,8-1,8)=2,7 - 2 часа 42 минуты
1.3*8
2.6;7;5;4;9
3.18,9,10,5,6,3,4,2,3