To solve a problem by means of the equation. The cooperative planned to produce lot of men's shirts in 8 days. However releasing 10 shirts more, than it was supposed, it implemented the plan in 1 day prior to term. How many men's shirts in day did the cooperative have to release?

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8 - 1 = 7 days for turn out will implement the plan so many if to release 10 shirts more, then, if we take quantity of shirts in day for X, then according to the plan there will be the 8th, and 7 * (x + 10) before the plan of the 8th = 7 * (x + 10) the 8th = the 7th + 70 the 8th - the 7th = 70 x = 70 shirts a day have to release according to the plan
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Answer add