1) - х = 15 4/7
х = - 15 4/7
2) - х = 5/6 - 1/9
- х = 15/18 - 2/18
- х = 13/18
х = - 13/18
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1) - х = 15 4/7
х = - 15 4/7
2) - х = 5/6 - 1/9
- х = 15/18 - 2/18
- х = 13/18
х = - 13/18