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yfnfif4
@yfnfif4
July 2022
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РЕШИТЕ СИСТЕМУ УРАВНЕНИЙ.
3х+2у=240
3у-2х=35
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Элмэт
Из первого уравнения х=(240-2у)/3
подставляем во второе
3у-2(240-2у)/3=35
3у-(480+4у)/3=35
(480+4у)/3=35+3у
480+4у=105+9у
5у=375
у=75
Ответ:75
1 votes
Thanks 2
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Answers & Comments
подставляем во второе
3у-2(240-2у)/3=35
3у-(480+4у)/3=35
(480+4у)/3=35+3у
480+4у=105+9у
5у=375
у=75
Ответ:75