Question

Решите неравенство:
1) l2x + 1l < 3; 3) l3x - 2l > 7; 5) l5x + 3l < 7;

Answer 1

|2x+1|<3
2x+1<3
2x<1-3
2x<-2
x<-1

|3x-2|>7
3x-2>7
3x>2+7
3x>9
x>3

|5x+3|<7
5x+3<7
5x<3-7
5x<-4
x<-0.8