9 1/5 - (5x-4 1/2) : 11 1/4=8 14/15

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Tagir

Математика

10 октября, 23:44

9 1/5 - (5x-4 1/2) : 11 1/4=8 14/15

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Александр Волков · Answer 1

9 1/5 - (5x - 4 1/2) : 11 1/4 = 8 14/15;

46/5 - (5 х - 9/2) : 45/4 = 134/15;

46/5 - (5 х: 45/4 - 9/2 : 45/4) = 134/15;

46/5 - (5 х/1 * 4/45 - 9/2 * 4/45) = 134/15;

46/5 - (х * 4/9 - 2/5) = 134/15;

46/5 - х * 4/9 + 2/5 = 134/15;

- х * 4/9 + 48/5 = 134/15;

- х * 4/9 = 134/15 - 48/5;

- х * 4/9 = 134/15 - 144/15;

- х * 4/9 = - 10/15;

- х = - 10/15 : 4/9;

- х = - 10/15 * 9/4;

- х = - 3/2;

- х * (-1) = - 3/2 * (-1);

х = 3/2;

9 1/5 - (5 * 3/2 - 4 1/2) : 11 1/4 = 8 14/15;

46/5 - (5 * 3/2 - 9/2) : 45/4 = 134/15;

46/5 - (15/2 - 9/2) : 45/4 = 134/15;

46/5 - 6/2 : 45/4 = 134/15;

46/5 - 12/45 = 134/15;

414/45 - 12/45 = 134/15;

402/45 = 134/15;

134/15 = 134/15.