( х -29 ) + 18 / 31 = 1 17 / 31,
х - 29 = 1 17/31 - 18/31,
х - 29 = 30/31,
х = 29 30/31.
Ответ: х = 29 30/31
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( х -29 ) + 18 / 31 = 1 17 / 31,
х - 29 = 1 17/31 - 18/31,
х - 29 = 30/31,
х = 29 30/31.
Ответ: х = 29 30/31