Ответ:
73/10*х-65/30*х
219/30*х-65/30*х=156/30*х
156/30*20/11=3120/330
9 180/330
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Ответ:
73/10*х-65/30*х
219/30*х-65/30*х=156/30*х
156/30*20/11=3120/330
9 180/330