Question

Помогите решить уравнения :
1. 5,37-x=-18,3
2. (-1/7+x)-1/14=2 1/3

Answer 1

1. 5,37 - х = - 18,3
х = 5,37 - (-18,3)
х = 5,37 + 18,3
х = 23,67
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Проверка: 5,37 - 23,67 = - 18,3

2. (-1/7 + х) - 1/14 = 2 1/3
- 1/7 + х = 2 1/3 + 1/14 = 2 14/42 + 3/42 = 2 17/42
х = 2 17/42 - (-1/7) = 2 17/42 + 1/7 = 2 17/42 + 6/42 = 2 23/42
х = 2 целых 23/42
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Проверка: (-1/7 + 2 23/42) - 1/14 = 2 1/3
                  - 6/42 + 2 23/42 - 3/42 = 2 1/3
                   2 23/42 - 9/42 = 2 14/42 = 2 1/3