Răspuns :
3( 2|2x-5| -7) < 14+19
3 * (2* |2x-5| -7) < 33
2* |2x-5|-7 < 11
2* |2x-5| < 11+7
2* |2x-5| <18
|2x-5| < 9
-9 < |2x-5 | < 9
-9 < 2x-5 <9 |5
-4 < 2x < 14 |:2
-2 < x < 7 ⇒ x∈(-2;7)
3 * (2* |2x-5| -7) < 33
2* |2x-5|-7 < 11
2* |2x-5| < 11+7
2* |2x-5| <18
|2x-5| < 9
-9 < |2x-5 | < 9
-9 < 2x-5 <9 |5
-4 < 2x < 14 |:2
-2 < x < 7 ⇒ x∈(-2;7)
3(2|x-5| - 7) <14+19
3(2|x-5| - 7) <33
(2|x-5| - 7) <33:3
(2|x-5| - 7) <11
2|x-5| <18
|x-5|<9
-9 < |2x-5 | < 9
-9 < 2x-5 <9
-4 < 2x < 14
-2 < x < 7
x aprtine (-2, 7)
3(2|x-5| - 7) <33
(2|x-5| - 7) <33:3
(2|x-5| - 7) <11
2|x-5| <18
|x-5|<9
-9 < |2x-5 | < 9
-9 < 2x-5 <9
-4 < 2x < 14
-2 < x < 7
x aprtine (-2, 7)