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Miroslava777
@Miroslava777
August 2022
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Решите систему уравнений способом подстановки
5) х+5у=-2
0,5х-у=6
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svetazuna
х+5у=-2,
0,5х-у=6,
х = -2-5у,
0,5(-2-5у)-у=6,
-1-2,5у-у=6,
-3,5у=7,
у = -2,
х = -2-5*(-2) = -2+10 = 8,
ответ: (8; -2)
3 votes
Thanks 4
Miroslava777
а можете ещё сложением
svetazuna
эту самую систему?
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Answers & Comments
0,5х-у=6,
х = -2-5у,
0,5(-2-5у)-у=6,
-1-2,5у-у=6,
-3,5у=7,
у = -2,
х = -2-5*(-2) = -2+10 = 8,
ответ: (8; -2)