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PlayWithSERCH
@PlayWithSERCH
August 2021
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Реши систему двух уравнений.
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dashaplyasova
(k+v):6 - (k-v):3=-1|6
(2k-v):6 - (3k+2v):3=-13|6
k+v - 2k-2v=6
2k-v-9k+6v=-78
-1k-1v=6|*5
-7k+5v=-78
-5k-5v=35
-7k+5v=-78
-5k-5v-7k+5v=35-78
-5k-7k=35-78
-12k=-43
k=-43:12
k=-3,5
17.5-5v=35
-5v=35-17.5
-5v=17.5
v=17.5:5
v=3.5
Ответ:k=-3.5;v=3.5
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Answers & Comments
(2k-v):6 - (3k+2v):3=-13|6
k+v - 2k-2v=6
2k-v-9k+6v=-78
-1k-1v=6|*5
-7k+5v=-78
-5k-5v=35
-7k+5v=-78
-5k-5v-7k+5v=35-78
-5k-7k=35-78
-12k=-43
k=-43:12
k=-3,5
17.5-5v=35
-5v=35-17.5
-5v=17.5
v=17.5:5
v=3.5
Ответ:k=-3.5;v=3.5