Ответ:
15х-7/15/1/4=-4
(15х-7)×4/15=-4
60х-28/15=-4
60х-28=-60
60х=-60+28
60х=-32|:60
х=-(8/15)
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Ответ:
15х-7/15/1/4=-4
(15х-7)×4/15=-4
60х-28/15=-4
60х-28=-60
60х=-60+28
60х=-32|:60
х=-(8/15)