Ответ:
7х/6-5х/18=4/27
2)
2х/7+х/4=15/14
3)
-х/8+1=х/12
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Ответ:
7х/6-5х/18=4/27
2)
2х/7+х/4=15/14
3)
-х/8+1=х/12