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nastyadzein
@nastyadzein
August 2022
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Решите систему
∑40r+3s=10
∑20r-7s=5
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СоваКанва
S=(10-40r)/3
20r-7s=5
20r-7(10-40r)/3=5
20r-(70-280r)/3=5
60r-70+280r=5
340r=75
r=15/68
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СоваКанва
s=(10-40*15/68)/3=(10-10*15/17)/3=(10-8 14/17)/3=(9 3/17)/3=27/(17*3)=27/51=9/17
СоваКанва
забыла про s
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Answers & Comments
20r-7s=5
20r-7(10-40r)/3=5
20r-(70-280r)/3=5
60r-70+280r=5
340r=75
r=15/68