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varvara08092003
@varvara08092003
July 2022
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решите систему уравнений срочно 40 б 2х-3у+5=2(3х-у)
5-4у-16=х-2у
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rich1337228
2(3х - у) - 5 = 2х - 3у,
5 - (х - 2у) = 4у + 16.
6x-2y-5=2x-3y
5-x+2y=4y+16
4x+y=5
x+2y=-11
y=5-4x
x+2(5-4x)=-11
x+10-8x=-11
-7x=-21
x=3
y=5-4*3=5-12=-7
Ответ: (3;-7).
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Answers & Comments
5 - (х - 2у) = 4у + 16.
6x-2y-5=2x-3y
5-x+2y=4y+16
4x+y=5
x+2y=-11
y=5-4x
x+2(5-4x)=-11
x+10-8x=-11
-7x=-21
x=3
y=5-4*3=5-12=-7
Ответ: (3;-7).