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smirnovsergey3112198
@smirnovsergey3112198
August 2022
1
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решите неравенства
1.2(х-1) меньше 3(2-х)
2.-3≤2х-1≤5
3.решите систему неравенств
4-3х≥0
2х+1 больше 0
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Answers & Comments
evvoronina1
1.
2(х-1) < 3(2-х)
2х - 2 < 6 - 3х
2х + 3х < 6 + 2
5х < 8
х < 8:5
х < 1 3/5 или х < 1,6
2.
-3 ≤ 2х-1 ≤ 5
1 -3 ≤ 1 + 2х - 1 ≤ 1 + 5
-2 ≤ 2х ≤ 6
-2/2 ≤ 2х/2 ≤ 6/2
-1 ≤ х ≤ 3
3.
{ 4-3х ≥ 0
{ 2х+1 > 0
{ -3х ≥ -4
{ 2х > -1
{ х ≤ -4 : (-3)
{ х > -1 : 2
{ х ≤ 1 1/3
{ х > -1/2
______-1/2////////0////////////////////1 1/3______
-1/2 < х ≤ 1 1/3
х ∈ (-1/2; 1 1/3]
2 votes
Thanks 2
smirnovsergey3112198
спасибо огромное
evvoronina1
Рада помочь
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Answers & Comments
2(х-1) < 3(2-х)
2х - 2 < 6 - 3х
2х + 3х < 6 + 2
5х < 8
х < 8:5
х < 1 3/5 или х < 1,6
2.
-3 ≤ 2х-1 ≤ 5
1 -3 ≤ 1 + 2х - 1 ≤ 1 + 5
-2 ≤ 2х ≤ 6
-2/2 ≤ 2х/2 ≤ 6/2
-1 ≤ х ≤ 3
3.
{ 4-3х ≥ 0
{ 2х+1 > 0
{ -3х ≥ -4
{ 2х > -1
{ х ≤ -4 : (-3)
{ х > -1 : 2
{ х ≤ 1 1/3
{ х > -1/2
______-1/2////////0////////////////////1 1/3______
-1/2 < х ≤ 1 1/3
х ∈ (-1/2; 1 1/3]