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privet777777
@privet777777
August 2021
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решите систему зорание спасибо
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Варан
Х+у=12-2х+2у
21х+14у-3х-9у=105
х+у+2х-2у=12
18х+5у=105
3х-у=12 у=3х-12
18х+5(3х-12)=105
18х+15х=165
33х=165
х=5
3*5-у=12
у=15-12
у=3
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Answers & Comments
21х+14у-3х-9у=105
х+у+2х-2у=12
18х+5у=105
3х-у=12 у=3х-12
18х+5(3х-12)=105
18х+15х=165
33х=165
х=5
3*5-у=12
у=15-12
у=3