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lerochka11654
@lerochka11654
August 2022
1
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Решите неравенства:
1) 8х < 72
2) 4x+19 меньше или равно 5х-1
3)3(1 - х)+2(2 - 2х) < 0
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smyshlyaeva19
1) 8х<72
х<72:8
х<9
2) 4х+19≤5х-1
4х-5х≤-1-19
-х≤-20
х≥20
3) 3(1-х)+2(2-2х)<0
3-3х+4-4х<0
-7х<0-3-4
-7х<-7
х>1
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Answers & Comments
х<72:8
х<9
2) 4х+19≤5х-1
4х-5х≤-1-19
-х≤-20
х≥20
3) 3(1-х)+2(2-2х)<0
3-3х+4-4х<0
-7х<0-3-4
-7х<-7
х>1