1 вариант 1. Сравните дроби: b) 1 и 01 ! 2. Среди чисел 1 13:37: Решите

1.  2,04:x+5,19y
если х=3,4, у=0,4,то:
2,04:3,4+5,19*0,4=2,676
1)2,04:3,4=20,4:34=0,6
2)5,19*0,4=2,076
3)0,6+2,076 = 2,676
ответ: 2,676
2. 1,4у-0,3п
если у=2,6, п=5,9, то:
1,4 * 2,6 - 0,3 * 5,9= 1,87
1)1,4*2,6=3,64
2)0,3*5,9=1,77
3)3,64 - 1,77 = 1, 87
ответ: 1,87
3. 453х-0,1827у
если х=0,1, у=100, то:
453*0,1 - 0,1827*100=27,03
1)453*0,1 = 45,3
2)0,1827*100=18,27
3) 45,3 - 18,27 = 27,03
ответ:27,03

4. 2,4х-1,5х+47=1919
0,9х = 1872
х=2080
ответ: 2080

5. 0,8(х-1,9)=0,56
0,8х - 1,52 = 0,56
0,8х = 2,08
х=2,6
ответ: 2,6

6. 0,32(х+1,4)=73,6
0,32х+0,448 = 73,6
0,32х=73,152
х=228,6
ответ:228,6

7.1,7(5х-0,16)=0,238
8,5х-0,272=0,238
8,5х=0,51
х=0,06
ответ: 0,06

32/5 = 17/5 1 5/6 = 11/6 3 8/11 = 41/11 1 51/53 = 104/53 2 6/13 = 32/13 7 1/5 = 36/5 5 5/11 = 60/11 6 2/7 = 44/7 3 1/9 = 28/9 7 3/7 = 52/7 17 2/3 = 53/3 5 2/5 = 27/5 3 5/12 = 41/12 29 1/2 = 59/2 7 5/8 = 61/8 9 3/4 = 39/4 11 3/5 = 58/5 13 1/2 = 27/2 3 3/4 = 15/4 2 1/4= 9/4 2 8/9 = 26/9 10 2/3 = 32/3 7 4/5 = 39/5 3 5/6 = 23/6 13 4/9 = 121/9 5 7/8 = 47/8 4 5/7 = 33/7 7/12+3/12 = 10/12 = 5/6 3/7+2/7 = 5/7 13/55-5/55 = 8/55 11/18-7/18 = 4/18 = 2/9 7/10+1/10 = 8/10 = 4/5 15/8-7/8 = 8/8 = 1 12/15+7/15 = 19/15 = 1 4/15 45/100+35/100 = 80/100 = 4/5 65/76-25/76 = 40/76 = 10/19 46/100-41/100 = 5/100 = 1/20 4/5-3/5 = 1/5 4/11+6/1 = 6 4/11 7/8-5/8 = 2/8 = 1/4 77-67/100 = 76 33/100 6/13+7/13 = 13/13 = 1 43/56-33/56 = 10/56 = 5/28 6/23+20/23 = 26/23 = 1 3/23 4/7+2/7 = 6/7 3/4+3/4 = 6/4 = 1 1/2 5/6-1/6 = 4/6 = 2/3 7+1/5 = 7 1/5 3-4/7 = 2 3/7 1-6/11 = 5/11 1+3 5/7 = 4 5/7 8 2/5+3 = 11 2/5 7-4/9 = 2 5/9 8 7/9-6 = 2 7/9 4+1 3/5 = 5 3/5 7-2 1/2 = 4 1/2