Question

Срочно!!! Очень надо прошу!!!

Answer 1

(1,9 + 3,5) : (0,8 - 0,35) = 5,4 : 0,45 = 12
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6/5 : 11/10 + 7/22 = 1 9/22
   1) 6/5 : 11/10 = 6/5 * 10/11 = 6/1 * 2/11 = 12/11
   2) 12/11 + 7/22 = 24/22 + 7/22 = 31/22 = 1 9/22
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40 - 9,9 : 0,25 = 40 - 39,6 = 0,4
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2 4/5 : 21/20 - 1/3 = 4 5/21
  1) 2 4/5 : 21/20 = 24/5 * 20/21 = 8/1 * 4/7 = 32/7
  2) 32/7 - 1/3 = 96/21 - 7/21 = 89/21 = 4 5/21
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1,9 * 6,8 : 1,7 - 1,6
-------------------------- = 6/3 = 2
84 * 3/14 - 15

1) 1,9 * 6,8 = 12,92
2) 12,92 : 1,7 = 7,6
3) 7,6 - 1,6 = 6
4) 84 * 3/14 = 18
5) 18 - 15 = 3
6) 6 : 3 = 2