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EgorSavinov27
@EgorSavinov27
August 2021
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Решите методом алгебраического сложения систему уравнения :
{3x-y=7
{2x+3y=1
Помогите плиз дам 20б
1
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СтарыйМатематик
СтарыйМатематик
3x-y=7 |*3
9x-3y=21
2x+3y+9x-3y=1+21
11x=22
x=2
6-y=7
y=6-7=-1
Ответ: (2;-1)
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