Решите неравенство, содержащее переменную под знаком модуля:
а) |2х+3|<9;
в) |5х+2|>=4,4;
б) |3х-7|>5;
г) |2х-9|<=3,5.
а) |2х+3|<9;
в) |5х+2|>=4,4;
б) |3х-7|>5;
г) |2х-9|<=3,5.
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A)2x+3<92x+3<-9
2x<6
2x<-12
-6>x<3
б)5х+2>=4,4
5х+2<=-4,4
5x>=2.4
5x<=-6.4
x>=0.48
x<=-1.28
0.48>x<=-1.28
в)3х-7>5
3х-7<-5
3х>12
3х<2
x>4
x<0.66
0.66<x>4
г)2х-9<=3,5
2х-9>=-3,5
2x<=12.5
2x>=5.5
x<=6.25
x>=2.75
6.25=<x>=2.75