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veselo2
@veselo2
October 2021
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помогите,забыла как решать
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fadeevakatja
X=-4-2y
3(-4-2y)-2y=12
-12-6y-2y=12
-8y=12+12
-8y=24
y=-3то x=-4-2(-3)=-4+6=2
ответ (2;-3)
2) 3x-4=y
2x+3(3x-4)=21
2x+9x-12=21
11x=21+12
11x=33
x=3 то y=3*3-4=9-4=5
ответ (3;5)
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veselo2
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veselo2
спасибо
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Answers & Comments
3(-4-2y)-2y=12
-12-6y-2y=12
-8y=12+12
-8y=24
y=-3то x=-4-2(-3)=-4+6=2
ответ (2;-3)
2) 3x-4=y
2x+3(3x-4)=21
2x+9x-12=21
11x=21+12
11x=33
x=3 то y=3*3-4=9-4=5
ответ (3;5)