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akn2000
@akn2000
July 2022
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Помогитеее решить систему уравнений:
2х+3у=3
5х+6у=9
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natasha963
1)2x+3y=3
2x=3-3y (делим на 2)
x=1,5-1,5y
2)5(1,5-1,5y)+6y=9
7,5-7,5y+6y=9
-1,5y=1,5 (делим на (-1,5))
y=(-1)
3)x=1,5-1,5*(-1)
x=3
Ответ: x=3 y=(-1)
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Answers & Comments
2x=3-3y (делим на 2)
x=1,5-1,5y
2)5(1,5-1,5y)+6y=9
7,5-7,5y+6y=9
-1,5y=1,5 (делим на (-1,5))
y=(-1)
3)x=1,5-1,5*(-1)
x=3
Ответ: x=3 y=(-1)