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УточкаНя
@УточкаНя
July 2022
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Помогите с 4-ым заданием, пожалуйста
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ivanshumilov2
1) 5*(х-7)=3*(х-4)-27
5х-35=3х-12-27
5х-3х=35-12-27
2х=-4
х=-4:2
х=-2
2) 3х+2*(2х-3)=8-7*(х-2)
3х+4х-6=8-7х+14
3х+4х+7х=8+14+6
14х=28
х=28:14
х=2
3) 4*(х-3)-16=5*(х-5)
4х-12-16=5х-25
4х-5х=12+16-25
-х=3
х=-3
4) 3*(2х-5)+4х=5*(х-3)+27
6х-15+4х=5х-15+27
6х+4х-5х=15+27-15
5х=27
х=27:5
х=5,4
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Answers & Comments
5х-35=3х-12-27
5х-3х=35-12-27
2х=-4
х=-4:2
х=-2
2) 3х+2*(2х-3)=8-7*(х-2)
3х+4х-6=8-7х+14
3х+4х+7х=8+14+6
14х=28
х=28:14
х=2
3) 4*(х-3)-16=5*(х-5)
4х-12-16=5х-25
4х-5х=12+16-25
-х=3
х=-3
4) 3*(2х-5)+4х=5*(х-3)+27
6х-15+4х=5х-15+27
6х+4х-5х=15+27-15
5х=27
х=27:5
х=5,4