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S876lLAURA876S
@S876lLAURA876S
September 2021
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Найдете х пропорциях:#3,5
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PhysicalFace
3)
5/3 = 11/2 * 10/33 * x
5/3 = 5/3 * x
x = 5/3 / 5/3
x = 5/3 * 3/5
x = 1
5)
(2x - 1) / 4,5 = 2,8 / 21/5
(2x - 1) * 10/45 = 28/10 * 5/21
(20x - 10) / 45 = 2/3
Умножаем левую и правую части уравнения на 45, чтобы обрать знаменатель 45:
45 * ( (20x - 10) / 45 ) = 45 * 2/3
20x - 10 = 30
x = 40 / 20
x = 2
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Answers & Comments
5/3 = 11/2 * 10/33 * x
5/3 = 5/3 * x
x = 5/3 / 5/3
x = 5/3 * 3/5
x = 1
5)
(2x - 1) / 4,5 = 2,8 / 21/5
(2x - 1) * 10/45 = 28/10 * 5/21
(20x - 10) / 45 = 2/3
Умножаем левую и правую части уравнения на 45, чтобы обрать знаменатель 45:
45 * ( (20x - 10) / 45 ) = 45 * 2/3
20x - 10 = 30
x = 40 / 20
x = 2