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Дотошная
@Дотошная
July 2022
2
3
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Решите уравнения.
3х-1=2(х-2)
2. 3(х+5)=7-5х
3.19(y-9)=3(y+7)
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Answers & Comments
VikkiBogush
№1
3х-1=2х-4
3х-2х=-4+1
х=-3
№2
3х+15=7-5х
3х+5х=7-15
8х=-8
х=-1
№3
19у-171=3у+21
19у-3у=21+171
16у=192
у=12
4 votes
Thanks 4
anettach
3х-1=2(х-2)
3х-1=2х-4
х=-3
3(х+5)=7-5х
3х+15=7-5х
8х=-8
х=-1
19(у-9)=3(у+7)
19у-171=3у+21
16у=192
у=12
4 votes
Thanks 5
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Answers & Comments
3х-1=2х-4
3х-2х=-4+1
х=-3
№2
3х+15=7-5х
3х+5х=7-15
8х=-8
х=-1
№3
19у-171=3у+21
19у-3у=21+171
16у=192
у=12
3х-1=2х-4
х=-3
3(х+5)=7-5х
3х+15=7-5х
8х=-8
х=-1
19(у-9)=3(у+7)
19у-171=3у+21
16у=192
у=12