Ответ:

Пошаговое объяснение:

Найти сумму:

1. -6 + (-5) = -6 - 5 = -11      

2. -7 + (-2,8) = -7 - 2,8 = -9,8

3. -0,82 + (-0,18) = -0,82 - 0,18 = -1

4. -5/7 + (-9/14) = -10/14 - 9/14 = -19/14 = -1 5/14

5. -1/4 + (-1/6) = -3/12 - 2/12 = -5/12

6. -3/8 + 0 = -3/8

Найти сумму:

1. -9 + (-13)= -9 - 13 = -22

2. -3,6 + (-1,5) = -3,6 - 1,5 = -5,1

3. -5/16 + (-7/16) = -5/16 - 7/16 = -12/16 = -3/4

4. -3/7 + (-4/9) = -27/63 - 28/63 = -55/63

Вычислить значение выражений:

1. 2/15 + (-3/10) = 4/30 - 9/30 = -5/30

2. -2/3 + 13/15 = -10/15 + 13/15 = 3/15 = 1/5

3. 13/16 + (-9/32) = 26/32 - 9/32 = 17/32

4. -4 5/9 + (-7 1/6) = -4 10/18 - 7 3/18 = -11 13/18

5. -5 7/8 + (-6 3/10) = -5 35/40 - 6 12/40 = -11 47/40 = -12 7/40

6. -5 13/18 + 12 11/12 = -5 26/36 + 12 33/36 = 7 7/36

7. -13 + 7 3/16 = -12 16/16 + 7 3/16 = -5 13/16

8. -2 3/8 + (-1 5/9) = -2 27/72 - 1 40/72 = -3 67/72

9. -8 + 4 5/22 = -7 22/22 + 4 5/22 = -3 17/22

10. -2 9/20 + 5 7/30 = -2 27/60 + 5 14/60 = 2 47/60

11. -5 1/4 + 1 3/8 = -5 2/8 + 1 3/8 = -3 7/8

12. 4 3/7 + (-8 9/14) = 4 6/14 - 8 9/14 = -4 3/14