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eco44
@eco44
July 2022
1
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Привет,помогите решить 1 вариант,даю 25 баллов!!!!!!!
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lika9046
НоК (5,9,15)= 45
45*(2х-3)/5 - 45*(5х-4)/9 = 45*(4х+ 3)/15
Сокращение:
9*(2х-3) - 5*(5х-4) = 3*(4х+3)
18х-27 - 25х-20 = 12х+9
у нас получилось линейное уравнение.
18х - 25х -12х = 27 +20 +9
-19х = 56
х = 2 18/19
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Answers & Comments
45*(2х-3)/5 - 45*(5х-4)/9 = 45*(4х+ 3)/15
Сокращение:
9*(2х-3) - 5*(5х-4) = 3*(4х+3)
18х-27 - 25х-20 = 12х+9
у нас получилось линейное уравнение.
18х - 25х -12х = 27 +20 +9
-19х = 56
х = 2 18/19