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darinashagaeva
@darinashagaeva
July 2022
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решите систему уравнений 2х+5у=1
4х+3у=9
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novo51
2х+5у=1
4х+3у=9
первое умножим на 2
4х+10у=2
4х+3у=9
из первого вычтем второе
7у=-7
у=-1
2х+5у=1
х=1/2*(1-5у)=1/2*(1+5)=3
ответ. (3, -1)
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Answers & Comments
4х+3у=9
первое умножим на 2
4х+10у=2
4х+3у=9
из первого вычтем второе
7у=-7
у=-1
2х+5у=1
х=1/2*(1-5у)=1/2*(1+5)=3
ответ. (3, -1)