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July 2022
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Решите систему уравнения
4x-5y=5
x+y=-2
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karlmikhailoff
4x-5y=5
x+y=-2 x=-2-y
4(-2-y)-5y=5
-8-4y-5y=5
-9y=13
y=-13/9=-1 целая 4/9
x=-2-(-13/9)=-5/9
Ответ: x=-5/9
y=-13/9
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Answers & Comments
x+y=-2 x=-2-y
4(-2-y)-5y=5
-8-4y-5y=5
-9y=13
y=-13/9=-1 целая 4/9
x=-2-(-13/9)=-5/9
Ответ: x=-5/9
y=-13/9