Задание из класса 1) (x + 13,216) - 24,83 = 5,17 2) y-5 = 1 3) 1,2-(x-)= 4) 0,8(x1,9) = 0,56 5) 1,7(5x0,16) = 0,238 6) (x + 9,14): 7,2 = 5 7) 4,31,7x = 4,028 8) 0,8(100-0,04x) = 8,64 9) 4,9m0,1m = 3,84 10) 3,8a + 4,6a = 13,44 4 Д/3 1) x 1,2 1,44; 2) a: 1,150,24; 3) b 2,16 0,05; 4) 0,45c 0,765 5) t 5,248,568; 6) x 0,8 0,34; 7) (y + 2,973): 5,09 0,72; 8) (46,904x): 31,2 = 0,71; 9) y(4,2 + 10,8) = 136,5 10) 3,16(y 15,59) = 5,372

Ответ:

Задание из класса

1. (x + 13.216) - 24.83 = 5.17

   x + 13.216 = 5.17 + 24.83

   x + 13.216 = 30

   x = 30 - 13.216

   x = 16.784

2. y - 5\(\frac{3}{7}\) = 1\(\frac{6}{7}\)

   y = 1\(\frac{6}{7}\) + 5\(\frac{3}{7}\)

   y = 6\(\frac{9}{7}\)

   y = 6 + 1\(\frac{2}{7}\)

   y = 7\(\frac{2}{7}\)

3. 1.2 - (x - \(\frac{1}{4}\)) = \(\frac{1}{2}\)

   1.2 - x + \(\frac{1}{4}\) = \(\frac{1}{2}\)

   1.2 + 0.25 - x = 0.5

   1.45 - x = 0.5

   x = 1.45 - 0.5

   x = 0.95

4. 0.8(x - 1.9) = 0.56

   0.8x - 1.52 = 0.56

   0.8x = 0.56 + 1.52

   0.8x = 2.08

   x = 2.08 / 0.8

   x = 2.6

5. 1. 7(5x - 0.16) = 0.238

   8. 5x - 0.272 = 0.238

   9. 5x = 0.238 + 0.272

   10. 5x = 0.51

   x = 0.51 / 8.5

   x = 0.06

6. (x + 9.14) : 7.2 = 5

   x + 9.14 = 5 * 7.2

   x + 9.14 = 36

   x = 36 - 9.14

   x = 26.86

7. 4. 3 - 1.7x = 4.028

   -1.7x = 4.028 - 4.3

   -1.7x = -0.272

   x = -0.272 / -1.7

   x = 0.16

8. 0. 8(100 - 0.04x) = 8.64

   80 - 0.032x = 8.64

   -0.032x = 8.64 - 80

   -0.032x = -71.36

   x = -71.36 / -0.032

   x = 2230

9. 9. 9m - 0.1m = 3.84

   10. 8m = 3.84

   m = 3.84 / 4.8

   m = 0.8

10. 11. 8a + 4.6a = 13.44

    12. 4a = 13.44

    a = 13.44 / 8.4

    a = 1.6

Д/з

1. x : 1.2 = 1.44

   x = 1.44 * 1.2

   x = 1.728

2. a : 1.15 = 0.24

   a = 0.24 * 1.15

   a = 0.276

3. b : 2.16 = 0.05

   b = 0.05 * 2.16

   b = 0.108

4. 0. 45 * c = 0.765

   c = 0.765 / 0.45

   c = 1.7

5. t * 5.2 = 48.568

   t = 48.568 / 5.2

   t = 9.34

6. x * 0.8 = 0.34

   x = 0.34 / 0.8

   x = 0.425

7. (y + 2.973) : 5.09 = 0.72

   y + 2.973 = 0.72 * 5.09

   y + 2.973 = 3.6648

   y = 3.6648 - 2.973

   y = 0.6918

8. (46.904 - x) : 31.2 = 0.71

   46. 904 - x = 0.71 * 31.2

   47. 904 - x = 22.152

   x = 46.904 - 22.152

   x = 24.752

9. y(4.2 + 10.8) = 136.5

   y * 15 = 136.5

   y = 136.5 / 15

   y = 9.1

10. 3. 16(y - 15.59) = 5.372

    4. 16y - 49.2604 = 5.372

    5. 16y = 5.372 + 49.2604

    6. 16y = 54.6324

    y = 54.6324 / 3.16

    y = 17.2887

Ответ: