Ответ:
1 - 7/9х = 8
9 - 7х = 72
- 7х = 72 - 9
- 7х = 63
х = 63:(-7)
х = 9
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Ответ:
1 - 7/9х = 8
9 - 7х = 72
- 7х = 72 - 9
- 7х = 63
х = 63:(-7)
х = 9