112-100%
56-х
5600:112=50%
Проплыл 50% и осталось 50%
1) (-3 +(-7))+(-8)= -10+(-8)=-18
2)( -29+(-21))+ (-46)=-50+(-46)=-96
3)( -72+(-28))+(-103)=-100+(-103)=-203
4)(-8,1+(-1,9))+((-10,9)+(-4,1))=-10+(-15)=-25
5) (-0,14+(-2,86))+((-7,25)+(-3,75))=-3+(-11)=-14
6) (-1,374+(-0,626))+((--8,09)+(-1,91))=-2+(-10)=-12
15:2 = 15/2 = 7,5
<span>23:5 = 23/5 = 4,6</span>
<span>9:6 = 9/6 = 3/2 = 1,5</span>
<span>25:15 = 25/15 = 5/3</span>
<span>12:18 = 12/18 = 2/3 </span>
9:12 = 9/12 = 3/4 = 0,75
<span>33:6 = 33/6 = 11/2 = 5,5</span>
<span>15:12 = 15/12 = 5/4 = 1,25</span>
6 = 2 ·3
13 = 13
НОК (6,13) = 2 · 3 · 13 = 78