Question

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Answer 1

Расставим действия:

1 5 4 3 2 6

(6 1/8 - 1,75) : (9 - 2,2 * (5 6/11 - 3,5)) * 1 2/7 = (35/8 : (9 - 2,2 * 22,5/11)) * 9/7 = (35/8 :

: 19,5/11) * 9/7 = 77/79,2 * 9/7 = 11/8,8 = 1,25.

1) 6 1/8 - 1,75 = 49/8 - 14/8 = 35/8;

2) 5 6/11 - 3,5 = 61/11 - 38,5/11 = 22,5/11;

3) 2,2 * 22,5/11 = 49,5/11;

4) 9 - 49,5/11 = 99/11 - 49,5/11 = 49,5/11;

5) 35/8 : 49,5/11 = 35/8 * 11/49,5 = 7/8 * 11/9,9 = 77/79,2;

6) 77/79,2 * 9/7 = 11/79,2 * 9/1 = 11/8,8 * 1/1 = 11/8,8 = 1,25.


(3_5/6 - 1_2/15)*5/9 +((1/20+0,24)*8_1/3 - 1_1/6)*2= 4
1 3 7 2 4 5 6

1) 3_5/6 - 1_2/15 = 3_25/30 - 1_ 4/30 = 2_21/30 = 2_7/10 = 2,7
2) 1/20 + 0,24 = 0,05+0,24 = 0,29 = 29/100
3) 2_7/10 * 5/9 = 27/10 * 5/9 = (27*5) / (10*9) = 3/2 = 1_1/2
4) 29/100 * 8_1/3 = 29/100 * 25/3 = 29/12 = 2_5/12
5) 2_ 5/12 - 1_ 1/ 6 = 2_ 5/12 - 1_2/12 = 1_3/12 = 1_1/4
6) 1_1/4 * 2 = 5/4 * 2 = 10/4 = 5/2 = 2_1/2
7) 1_1/2 + 2_1/2 = 4