400 : x - 28 = 53
400 : x = 53 + 28
400 : x = 81
x = 400 : 81
x = 4 76/81
Ответ: 4 целых 76/81 сотых.
400÷х=81
Х=400÷81
Х=4 76/81
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400 : x - 28 = 53
400 : x = 53 + 28
400 : x = 81
x = 400 : 81
x = 4 76/81
Ответ: 4 целых 76/81 сотых.
400÷х=81
Х=400÷81
Х=4 76/81