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fedosovtima
@fedosovtima
August 2022
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Решите систему уравнений x+2y=27 3x-y=11
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kkkh1
X=27-2y
3 (27-2y)-y=11
81-6y-y=11
-7y=11-81
-7y=-70
y=10
x=27-20=7
(7;-10)
13 votes
Thanks 26
Sabinaa89
Решила систему напишите.это способом сложения.
11 votes
Thanks 17
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Answers & Comments
3 (27-2y)-y=11
81-6y-y=11
-7y=11-81
-7y=-70
y=10
x=27-20=7
(7;-10)