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werost2019
@werost2019
July 2022
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Решите систему уравнений методом сложения (7класс)
0.2x-0.3(2y+1)=1.5
3(x+1)+3y=2y-2
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magdalina3
0.2х-0.6у=1.8 2х-6у=18 х-3у=9
3х+у=-5
х-3у=9 х=3у+9
3х+у=-5
3(3у+9)+у=-5 10у=-32 у=-3.2
-3,2+3х=-5 х=-0.6
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Answers & Comments
3х+у=-5
х-3у=9 х=3у+9
3х+у=-5
3(3у+9)+у=-5 10у=-32 у=-3.2
-3,2+3х=-5 х=-0.6