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micikarty
@micikarty
June 2022
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0,9+((3,25-(23/12+0,025x)*0,6)/(3/4))/(20/3)=1,2
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DaniilTalagaev
Пусть a = (3,25-(23/12+0,025x)*0,6)
1) a / (3/4) = a * (4/3)
2) (a * (4/3)) / (20/3) = (a * (4/3)) * (3/20) = (12/60) * a
0.9 + (12/60) * a = 1.2
Домножим обе части на 10
9 + (120/60)*a = 12
2a = 3
Поскольку a = (3,25-(23/12+0,025x)*0,6), то
(3,25-(23/12+0,025x)*0,6) * 2 = 3
6,5 - 1,2(23/12 + 0,025x) = 3
Домножим обе части на 10
65 - 12 (23/12 + 0,025x) = 30
65 - 23 - 0.3x = 30
-0.3x = -12
x = 12/0.3
x = 40
Ответ: 40
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Answers & Comments
1) a / (3/4) = a * (4/3)
2) (a * (4/3)) / (20/3) = (a * (4/3)) * (3/20) = (12/60) * a
0.9 + (12/60) * a = 1.2
Домножим обе части на 10
9 + (120/60)*a = 12
2a = 3
Поскольку a = (3,25-(23/12+0,025x)*0,6), то
(3,25-(23/12+0,025x)*0,6) * 2 = 3
6,5 - 1,2(23/12 + 0,025x) = 3
Домножим обе части на 10
65 - 12 (23/12 + 0,025x) = 30
65 - 23 - 0.3x = 30
-0.3x = -12
x = 12/0.3
x = 40
Ответ: 40