не могу решить надо уже здавать(((​

1) 400 - 260 = 140 (км) расстояние, которое проехал ii автомобиль от города в до места встречи. 2) 140  : 90  =  ¹⁴/₉ = 1  ⁵/₉ (ч.) время на путь ii автомобиля от города в до места встречи  (или время, которое оба автомобиля двигались навстречу друг другу ) 3) 2 + 1 ⁵/₉ =  3  ⁵/₉ (ч.) время на путь i автомобиля от города а до места встречи 4) 260  :   3  ⁵/₉ =  ²⁶⁰/₁    ×    ⁹/₃₂ =  ⁽⁶⁵ ˣ ⁹⁾ /₍₁ ₓ ₈₎  =  ⁵⁸⁵/₈ = 73  ¹/₈ = 73,125 (км/ч) скорость i автомобиля. проверим: s = (73,125 + 90) × 1  ⁵/₉  + 73,125× 2 = 163¹/₈  × 1  ⁵/₉  + 146,25 = =  ¹³⁰⁵/₈    ×  ¹⁴/₉    + 146,25 = 253,75 + 146,25 =    400 (км) ответ: 73,125 км/ч скорость первого автомобиля.

1.     1000-484=516

2.     19*24=456

3.     456-448=8

4.     140592/16=8787

5.     8787/1=8787

6.     2914+8787=11701

7.     11701-1723=9978

8.     32288/32=1009

9.     1317-1009=308

10.                                                                  18+14=32

11.                                                                  3*7=21

12.                                                                  7*0=0

13.                                                                  0+1=1

14.                                                                  960/4=240

15.                                                                  516/4=129

16.                                                                  176*3=528

17.                                                                  528/8=66

18.                                                                  9978*308=3073224

19.                                                                  21/3=7

20.                                                                  7*6=42

21.                                                                  32/8=4

22.                                                                  21/21=1

23.                                                                  1/1=1

24.                                                                  4*2=8

25.                                                                  8*3328=26624

26.                                                                  26624/1=26624

27.                                                                  240+129=369

28.                                                                  369-66=303

29.                                                                  303+3073224=3073527

30.                                                                  3073527+42=3073569

31.                                                                  3073569-4=3073565

32.                                                                  3073565+1=3073566

33.                                                                  3073566-1=3073565

34.                                                                  3073565+40000=3113565

35.                                                                  3113565-39968=3073597

36.                                                                  3073597+71=3073668

37.                                                                  3073668-26624=3047044