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0chocolatemilk0
@0chocolatemilk0
August 2022
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Решите систему уравнений
x-2y=-7
3x+4y=19
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Answers & Comments
snow99
Х - 2у = -7 | *3
3х + 4у = 19
3x - 6y = -21
3x + 4y = 19
Из второго уравнения вычтем первое:
10y = 40
x = -7 + 2y
y = 4
x = -7 + 2y
y = 4
x = -7 + 2*4 = 1
Ответ: (1; 4)
6 votes
Thanks 8
valeria7435
Вот решение системы
ответ будет (1;4)
2 votes
Thanks 2
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Answers & Comments
3х + 4у = 19
3x - 6y = -21
3x + 4y = 19
Из второго уравнения вычтем первое:
10y = 40
x = -7 + 2y
y = 4
x = -7 + 2y
y = 4
x = -7 + 2*4 = 1
Ответ: (1; 4)
ответ будет (1;4)