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rawildavletbae
@rawildavletbae
July 2022
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5х - 2у = 9
7х + 2у = 3
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simple13
Выражаем из первого 2y=5x-9
Подставляем во второе:
7x+5x-9=3
12x=12
x=1
2y=5x-9
y=(5x-9)/2
y=(5*1-9)/2=(-4)/2=-2
Ответ:{x=1;y=-2};
(1;-2).
6 votes
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Answers & Comments
Подставляем во второе:
7x+5x-9=3
12x=12
x=1
2y=5x-9
y=(5x-9)/2
y=(5*1-9)/2=(-4)/2=-2
Ответ:{x=1;y=-2};
(1;-2).