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annasilifonova
@annasilifonova
September 2021
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найдите число а если 60 от а равны 3/4 от числа (36-а)
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prettypushkova
Verified answer
60% = 60/100 = 0,6 3/4 = 0,75
---------------------------------------------------
Уравнение: 0,6а = 0,75(36 - а)
0,6а = 27 - 0,75а
0,6а + 0,75а = 27
1,35а = 27
а = 27 : 1,35
а = 20
Ответ: число 20.
Проверка:
0,6 * 20 = 0,75 * (36 - 20)
12 = 0,75 * 16
12 = 12
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Answers & Comments
Verified answer
60% = 60/100 = 0,6 3/4 = 0,75---------------------------------------------------
Уравнение: 0,6а = 0,75(36 - а)
0,6а = 27 - 0,75а
0,6а + 0,75а = 27
1,35а = 27
а = 27 : 1,35
а = 20
Ответ: число 20.
Проверка:
0,6 * 20 = 0,75 * (36 - 20)
12 = 0,75 * 16
12 = 12