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VPich
@VPich
October 2021
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ДАЮ 100 БАЛЛОВ!!!!!! Решите 2 двойных неравенства!
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Alina122443
1) 5-2х/6 >-1 |•6
5-2x/6<0| •6
5-2x> -6
5-2x<0
-2x>-11 |•(-1)
-2x < -5 |• (-1)
2x<11
2x>5
x<11/2
x>5/2
х є (5/2;11/2)
2) 1-3х/2 ≥ -2,5 | •2
1-3х/2 ≤ 2|•2
1-3х ≥ -5
1-3х ≤ 4
-3х ≥ -6 | •(-1)
-3х ≤ 3 | •(-1)
3х ≤ 6
3х ≥ -3
х ≤ 2
х ≥ -1
х є [ -1;2]
2 votes
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Answers & Comments
5-2x/6<0| •6
5-2x> -6
5-2x<0
-2x>-11 |•(-1)
-2x < -5 |• (-1)
2x<11
2x>5
x<11/2
x>5/2
х є (5/2;11/2)
2) 1-3х/2 ≥ -2,5 | •2
1-3х/2 ≤ 2|•2
1-3х ≥ -5
1-3х ≤ 4
-3х ≥ -6 | •(-1)
-3х ≤ 3 | •(-1)
3х ≤ 6
3х ≥ -3
х ≤ 2
х ≥ -1
х є [ -1;2]