вычислите: 8 + 4 5/7; 8 - 4 5/7; 4 5/7 - 8; -4 5/7 - 8; -4 5/7 - 8; -8 + 4 5/7

Вычислим значения выражений:

1) 8 + 4 5/7 = 8 + 4 + 5/7 = 12 + 5/7 = 12 5/7; 

2) 8 - 4 5/7 = 8 - 4 - 5/7 = 4 - 5/7 = 3 + 7/7 - 5/7 = 3 + 2/7;

3) 4 5/7 - 8 = 4 + 5/7 - 8 = -4 + 5/7 = -3 - 7/7 + 5/7 = -3 - 2/7 = -3 2/7; 

4) -4 5/7 - 8 = -4 - 5/7 - 8 = -12 - 5/7 = -12 5/7; 

5) -4 5/7 - 8 = -4 - 5/7 - 8 = -12 - 5/7 = -12 5/7; 

6) -8 + 4 5/7 = -8 + 4 + 5/7 = -4 + 5/7 = -3 - 7/7 + 5/7 = -3 - 2/7 = - 3 2/7.